Pr–Zn phases

16 phases (tier A 5, tier B 2, tier C 6, liquid 1, needs_review 2); 15 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Pr–Zn system page · Markdown · field reference

Phases of the Pr–Zn system (16)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:pr-zn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 823.29–1209.79 K, x(Zn) 0–0.12528	12	2
DHCP phase:pr-zn:dhcp-a3	alpha-La · A3' · hP4 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1171.07 K, x(Zn) 0–0.01504	6	2
FCC_A1 phase:pr-zn:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
HCP_A3 phase:pr-zn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1887.68 K, x(Zn) 1–1	2	2
LIQUID phase:pr-zn:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 692.67–2500 K, x(Zn) 0–1	50	2
PR13ZN58 phase:pr-zn:pr13zn58	Gd13Zn58 · hP142 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1163.81 K, x(Zn) 0.8169–0.8169	10	2
PR2ZN17_HT phase:pr-zn:pr2zn17-ht	Th2Zn17 · hR19 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 1047.37–1250.94 K, x(Zn) 0.89474–0.89474	10	2
PR2ZN17_LT phase:pr-zn:pr2zn17-lt	Ni17Th2 · hP38 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1048.12 K, x(Zn) 0.89474–0.89474	8	2
PR3ZN11 phase:pr-zn:pr3zn11	Al11La3 · oI28 · Immm (71)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1128.73 K, x(Zn) 0.78571–0.78571	10	2
PR3ZN22 phase:pr-zn:pr3zn22	Ce3Zn22 · tI100 · I4_1/amd (141)	tier B: DFT-supported (unique MP + OQMD match)	stable in 2 of 2 calculated diagram(s): 300–1229.2 K, x(Zn) 0.88–0.88	10	2
PRZN_B2 phase:pr-zn:przn-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1157.75 K, x(Zn) 0.5–0.5	21	2
PRZN11 phase:pr-zn:przn11	BaCd11 · tI48 · I4_1/amd (141)	tier B: DFT-supported (unique MP + OQMD match)	stable in 2 of 2 calculated diagram(s): 300–1015.86 K, x(Zn) 0.91667–0.91667	9	2
PRZN2 phase:pr-zn:przn2		needs_review	stable in 1 of 1 calculated diagram(s): 300–1172.24 K, x(Zn) 0.66667–0.66667	7	1
PRZN2_HT phase:pr-zn:przn2-ht		needs_review	stable in 1 of 1 calculated diagram(s): 823.29–1171.54 K, x(Zn) 0.66667–0.66667	8	1
PRZN2_LT phase:pr-zn:przn2-lt	Hg2K · oI12 · Imma (74)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–823.29 K, x(Zn) 0.66667–0.66667	2	1
PRZN3 phase:pr-zn:przn3	YZn3 · oP16 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1107.47 K, x(Zn) 0.75–0.75	10	2

BCC_A2 (Pr–Zn)

Id: phase:pr-zn:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 823.29–1209.79 K, x(Zn) 0–0.12528
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:pr-zn:bcc-a2
paper: paper:10.1016/j.jallcom.2007.03.120:bcc_A2, paper:10.1016/j.jallcom.2007.05.005:Bcc, paper:10.1016/j.jallcom.2007.05.005:bcc
tdb: tdb:PrZn-08Hua.tdb:BCC_A2, tdb:PrZn-08Wan.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: BCC_A2, type code %B, sha256 b69fb1ec5dd79bb6…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : PR% ZN : VA% : !

PrZn-08Wan.tdb: BCC_A2, type code %B, sha256 da6ba6c3a65fc781…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : PR% ZN : VA% : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1016/s0925-8388(00)01378-5 A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).
cited as the source of values for this phase

DHCP (Pr–Zn)

Id: phase:pr-zn:dhcp-a3; status assigned
Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type st:a3-alpha-la-hp4; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–1171.07 K, x(Zn) 0–0.01504
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:pr-zn:dhcp-a3, corpus:phase:pr-zn:dhcp
paper: paper:10.1016/j.jallcom.2007.03.120:dhcp, paper:10.1016/j.jallcom.2007.05.005:dhcp
tdb: tdb:PrZn-08Hua.tdb:DHCP, tdb:PrZn-08Wan.tdb:DHCP

TDB models of DHCP (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: DHCP, type code %A, sha256 b69fb1ec5dd79bb6…

43: PHASE DHCP %A 1 1 !
44: CONST DHCP : PR : !

PrZn-08Wan.tdb: DHCP, type code %A, sha256 da6ba6c3a65fc781…

43: PHASE DHCP %A 1 1 !
44: CONST DHCP : PR% ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1016/s0925-8388(00)01378-5 A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).
cited as the source of values for this phase

FCC_A1 (Pr–Zn)

Id: phase:pr-zn:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stoichiometry: Zn 1.0000
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pr-zn:fcc-a1
tdb: tdb:PrZn-08Hua.tdb:FCC_A1, tdb:PrZn-08Wan.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: FCC_A1, type code %A, sha256 b69fb1ec5dd79bb6…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : ZN : VA% : !

PrZn-08Wan.tdb: FCC_A1, type code %A, sha256 da6ba6c3a65fc781…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : ZN : VA% : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase

HCP_A3 (Pr–Zn)

Id: phase:pr-zn:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stoichiometry: Zn 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–1887.68 K, x(Zn) 1–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:pr-zn:hcp-a3
paper: paper:10.1016/j.jallcom.2007.05.005:hcp
tdb: tdb:PrZn-08Hua.tdb:HCP_A3, tdb:PrZn-08Wan.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: HCP_A3, type code %A, sha256 b69fb1ec5dd79bb6…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : ZN% : VA% : !

PrZn-08Wan.tdb: HCP_A3, type code %A, sha256 da6ba6c3a65fc781…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : ZN% : VA% : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase

LIQUID (Pr–Zn)

Id: phase:pr-zn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 692.67–2500 K, x(Zn) 0–1
Literature: 50 values (50 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pr-zn:liquid
paper: paper:10.1016/j.jallcom.2007.03.120:L, paper:10.1016/j.jallcom.2007.05.005:L
tdb: tdb:PrZn-08Hua.tdb:LIQUID, tdb:PrZn-08Wan.tdb:LIQUID

TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: LIQUID, type code %, sha256 b69fb1ec5dd79bb6…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : PR ZN : !

PrZn-08Wan.tdb: LIQUID, type code %, sha256 da6ba6c3a65fc781…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : PR ZN : !

Example references (7 of 7; assessments first):

doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase
doi:10.1016/s0925-8388(00)01378-5 A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).
cited as the source of values for this phase
doi:10.1016/0022-5088(66)90058-0 D.J. Michel, E. Ryba, P.K. Kejriwal, Melting points of REZn2 intermetallic compounds, Journal of the Less Common Metals 11, 67-69 (1966).
cited as the source of values for this phase
doi:10.1016/0364-5916(85)90021-5 Bo Sundman, Bo Jansson, Jan-Olof Andersson, The Thermo-Calc databank system, Calphad 9, 153-190 (1985).
cited as the source of values for this phase

PR13ZN58 (Pr–Zn)

Id: phase:pr-zn:pr13zn58; status assigned
Structure: Gd13Zn58 · hP142 · P6_3/mmc (194); type st:gd13zn58-hp142; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.1831, Zn 0.8169
Stability: stable in 2 of 2 calculated diagram(s): 300–1163.81 K, x(Zn) 0.8169–0.8169
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pr-zn:pr13zn58
paper: paper:10.1016/j.jallcom.2007.03.120:Pr13Zn58, paper:10.1016/j.jallcom.2007.05.005:Pr13Zn58
tdb: tdb:PrZn-08Hua.tdb:PR13ZN58, tdb:PrZn-08Wan.tdb:PR13ZN58

TDB models of PR13ZN58 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PR13ZN58, type code %, sha256 b69fb1ec5dd79bb6…

68: PHASE PR13ZN58 % 2 13 58 !
69: CONST PR13ZN58 : PR : ZN : !

PrZn-08Wan.tdb: PR13ZN58, type code %, sha256 da6ba6c3a65fc781…

73: PHASE PR13ZN58 % 2 13 58 !
74: CONST PR13ZN58 : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02664226 P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).
cited as the source of values for this phase

PR2ZN17_HT (Pr–Zn)

Id: phase:pr-zn:pr2zn17-ht; status assigned
Structure: Th2Zn17 · hR19 · R-3m (166); type st:th2zn17-hr19; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.1053, Zn 0.8947
Stability: stable in 2 of 2 calculated diagram(s): 1047.37–1250.94 K, x(Zn) 0.89474–0.89474
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pr-zn:pr2zn17-ht
paper: paper:10.1016/j.jallcom.2007.03.120:βPr2Zn17, paper:10.1016/j.jallcom.2007.05.005:Pr2Zn17-H
tdb: tdb:PrZn-08Hua.tdb:PR2ZN17_HT, tdb:PrZn-08Wan.tdb:PR2ZN17_HT

TDB models of PR2ZN17_HT (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PR2ZN17_HT, type code %, sha256 b69fb1ec5dd79bb6…

83: PHASE PR2ZN17_HT % 2 2 17 !
84: CONST PR2ZN17_HT : PR : ZN : !

PrZn-08Wan.tdb: PR2ZN17_HT, type code %, sha256 da6ba6c3a65fc781…

88: PHASE PR2ZN17_HT % 2 2 17 !
89: CONST PR2ZN17_HT : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase

PR2ZN17_LT (Pr–Zn)

Id: phase:pr-zn:pr2zn17-lt; status assigned
Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type st:ni17th2-hp38; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.1053, Zn 0.8947
Stability: stable in 2 of 2 calculated diagram(s): 300–1048.12 K, x(Zn) 0.89474–0.89474
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:pr-zn:pr2zn17-lt
paper: paper:10.1016/j.jallcom.2007.03.120:Pr2Zn17, paper:10.1016/j.jallcom.2007.03.120:αPr2Zn17, paper:10.1016/j.jallcom.2007.05.005:Pr2Zn17-L
tdb: tdb:PrZn-08Hua.tdb:PR2ZN17_LT, tdb:PrZn-08Wan.tdb:PR2ZN17_LT

TDB models of PR2ZN17_LT (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PR2ZN17_LT, type code %, sha256 b69fb1ec5dd79bb6…

78: PHASE PR2ZN17_LT % 2 2 17 !
79: CONST PR2ZN17_LT : PR : ZN : !

PrZn-08Wan.tdb: PR2ZN17_LT, type code %, sha256 da6ba6c3a65fc781…

83: PHASE PR2ZN17_LT % 2 2 17 !
84: CONST PR2ZN17_LT : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase

PR3ZN11 (Pr–Zn)

Id: phase:pr-zn:pr3zn11; status assigned
Structure: Al11La3 · oI28 · Immm (71); type st:al11la3-oi28; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.2143, Zn 0.7857
Stability: stable in 2 of 2 calculated diagram(s): 300–1128.73 K, x(Zn) 0.78571–0.78571
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pr-zn:pr3zn11
paper: paper:10.1016/j.jallcom.2007.03.120:Pr3Zn11, paper:10.1016/j.jallcom.2007.05.005:Pr3Zn11
tdb: tdb:PrZn-08Hua.tdb:PR3ZN11, tdb:PrZn-08Wan.tdb:PR3ZN11

TDB models of PR3ZN11 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PR3ZN11, type code %, sha256 b69fb1ec5dd79bb6…

63: PHASE PR3ZN11 % 2 3 11 !
64: CONST PR3ZN11 : PR : ZN : !

PrZn-08Wan.tdb: PR3ZN11, type code %, sha256 da6ba6c3a65fc781…

68: PHASE PR3ZN11 % 2 3 11 !
69: CONST PR3ZN11 : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02664226 P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).
cited as the source of values for this phase

PR3ZN22 (Pr–Zn)

Id: phase:pr-zn:pr3zn22; status assigned
Structure: Ce3Zn22 · tI100 · I4_1/amd (141); type st:ce3zn22-ti100; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Pr 0.1200, Zn 0.8800
Stability: stable in 2 of 2 calculated diagram(s): 300–1229.2 K, x(Zn) 0.88–0.88
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:pr-zn:pr3zn22
mp: mp:mp-aaacqieu
oqmd: oqmd:oqmd-670097
paper: paper:10.1016/j.jallcom.2007.03.120:Pr3Zn22, paper:10.1016/j.jallcom.2007.05.005:Pr3Zn22
tdb: tdb:PrZn-08Hua.tdb:PR3ZN22, tdb:PrZn-08Wan.tdb:PR3ZN22

TDB models of PR3ZN22 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PR3ZN22, type code %, sha256 b69fb1ec5dd79bb6…

73: PHASE PR3ZN22 % 2 3 22 !
74: CONST PR3ZN22 : PR : ZN : !

PrZn-08Wan.tdb: PR3ZN22, type code %, sha256 da6ba6c3a65fc781…

78: PHASE PR3ZN22 % 2 3 22 !
79: CONST PR3ZN22 : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02664226 P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).
cited as the source of values for this phase

PRZN_B2 (Pr–Zn)

Id: phase:pr-zn:przn-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaaars and oqmd-18895, space group 221
Stoichiometry: Pr 0.5000, Zn 0.5000
Stability: stable in 2 of 2 calculated diagram(s): 300–1157.75 K, x(Zn) 0.5–0.5
Literature: 21 values (21 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:pr-zn:przn-b2
mp: mp:mp-aaaaaars
oqmd: oqmd:oqmd-18895
paper: paper:10.1016/j.jallcom.2007.03.120:PrZn, paper:10.1016/j.jallcom.2007.05.005:PrZn
tdb: tdb:PrZn-08Hua.tdb:PRZN_B2, tdb:PrZn-08Wan.tdb:PRZN_B2

TDB models of PRZN_B2 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PRZN_B2, type code %, sha256 b69fb1ec5dd79bb6…

48: PHASE PRZN_B2 % 2 1 1 !
49: CONST PRZN_B2 : PR : ZN : !

PrZn-08Wan.tdb: PRZN_B2, type code %, sha256 da6ba6c3a65fc781…

48: PHASE PRZN_B2 % 2 1 1 !
49: CONST PRZN_B2 : PR : ZN : !

Example references (6 of 6; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1016/s0925-8388(00)01378-5 A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase
doi:10.1016/0364-5916(85)90021-5 Bo Sundman, Bo Jansson, Jan-Olof Andersson, The Thermo-Calc databank system, Calphad 9, 153-190 (1985).
cited as the source of values for this phase

PRZN11 (Pr–Zn)

Id: phase:pr-zn:przn11; status assigned
Structure: BaCd11 · tI48 · I4_1/amd (141); type st:bacd11-ti48; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Pr 0.0833, Zn 0.9167
Stability: stable in 2 of 2 calculated diagram(s): 300–1015.86 K, x(Zn) 0.91667–0.91667
Literature: 9 values (9 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:pr-zn:przn11
mp: mp:mp-aaabgilw
oqmd: oqmd:oqmd-19303
paper: paper:10.1016/j.jallcom.2007.03.120:PrZn11, paper:10.1016/j.jallcom.2007.05.005:PrZn11
tdb: tdb:PrZn-08Hua.tdb:PRZN11, tdb:PrZn-08Wan.tdb:PRZN11

TDB models of PRZN11 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PRZN11, type code %, sha256 b69fb1ec5dd79bb6…

88: PHASE PRZN11 % 2 1 11 !
89: CONST PRZN11 : PR : ZN : !

PrZn-08Wan.tdb: PRZN11, type code %, sha256 da6ba6c3a65fc781…

93: PHASE PRZN11 % 2 1 11 !
94: CONST PRZN11 : PR : ZN : !

Example references (5 of 5; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02664226 P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase

PRZN2 (Pr–Zn)

Id: phase:pr-zn:przn2; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (dft_mp): Imma (74) — on-hull MP PrZn2 at x(ZN)=0.6667
Candidate (dft_oqmd): Imma (74) — on-hull OQMD Pr1 Zn2 at x(ZN)=0.6667
Candidate (tdb_comment): Hg2K · oI12 · Imma — PrZn-08Hua.tdb: 'Prototype Hg2K (oI12, Imma)'
Stoichiometry: Pr 0.3333, Zn 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1172.24 K, x(Zn) 0.66667–0.66667
Literature: 7 values (7 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pr-zn:przn2
paper: paper:10.1016/j.jallcom.2007.05.005:PrZn2
tdb: tdb:PrZn-08Hua.tdb:PRZN2

TDB models of PRZN2 (1): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PRZN2, type code %, sha256 b69fb1ec5dd79bb6…

53: PHASE PRZN2 % 2 1 2 !
54: CONST PRZN2 : PR : ZN : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1016/0022-5088(66)90058-0 D.J. Michel, E. Ryba, P.K. Kejriwal, Melting points of REZn2 intermetallic compounds, Journal of the Less Common Metals 11, 67-69 (1966).
cited as the source of values for this phase

PRZN2_HT (Pr–Zn)

Id: phase:pr-zn:przn2-ht; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (dft_mp): Imma (74) — on-hull MP PrZn2 at x(ZN)=0.6667
Candidate (dft_oqmd): Imma (74) — on-hull OQMD Pr1 Zn2 at x(ZN)=0.6667
Candidate (literature_printed): (PrZn2) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (PrZn2) — Hallstedt 2025 mmc2 row for PRZN2_HT: PrZn2 (high T)
Stoichiometry: Pr 0.3333, Zn 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 823.29–1171.54 K, x(Zn) 0.66667–0.66667
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:pr-zn:przn2-ht
paper: paper:10.1016/j.jallcom.2007.03.120:PrZn2, paper:10.1016/j.jallcom.2007.03.120:βPrZn2
tdb: tdb:PrZn-08Wan.tdb:PRZN2_HT

TDB models of PRZN2_HT (1): PHASE and CONSTITUENT statements as written

PrZn-08Wan.tdb: PRZN2_HT, type code %, sha256 da6ba6c3a65fc781…

58: PHASE PRZN2_HT % 2 1 2 !
59: CONST PRZN2_HT : PR : ZN : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02811772 Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).
cited as the source of values for this phase

PRZN2_LT (Pr–Zn)

Id: phase:pr-zn:przn2-lt; status assigned
Structure: Hg2K · oI12 · Imma (74); type st:hg2k-oi12; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.3333, Zn 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–823.29 K, x(Zn) 0.66667–0.66667
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pr-zn:przn2-lt
paper: paper:10.1016/j.jallcom.2007.03.120:αPrZn2
tdb: tdb:PrZn-08Wan.tdb:PRZN2_LT

TDB models of PRZN2_LT (1): PHASE and CONSTITUENT statements as written

PrZn-08Wan.tdb: PRZN2_LT, type code %, sha256 da6ba6c3a65fc781…

53: PHASE PRZN2_LT % 2 1 2 !
54: CONST PRZN2_LT : PR : ZN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase

PRZN3 (Pr–Zn)

Id: phase:pr-zn:przn3; status assigned
Structure: YZn3 · oP16 · Pnma (62); type st:yzn3-op16; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pr 0.2500, Zn 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–1107.47 K, x(Zn) 0.75–0.75
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pr-zn:przn3
paper: paper:10.1016/j.jallcom.2007.03.120:PrZn3, paper:10.1016/j.jallcom.2007.05.005:PrZn3
tdb: tdb:PrZn-08Hua.tdb:PRZN3, tdb:PrZn-08Wan.tdb:PRZN3

TDB models of PRZN3 (2): PHASE and CONSTITUENT statements as written

PrZn-08Hua.tdb: PRZN3, type code %, sha256 b69fb1ec5dd79bb6…

58: PHASE PRZN3 % 2 1 3 !
59: CONST PRZN3 : PR : ZN : !

PrZn-08Wan.tdb: PRZN3, type code %, sha256 da6ba6c3a65fc781…

63: PHASE PRZN3 % 2 1 3 !
64: CONST PRZN3 : PR : ZN : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.03.120 C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.005 X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02643424 J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).
cited as the source of values for this phase
doi:10.1007/bf02664226 P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}