The Cu-S (Copper-Sulfur) system

06Hey: E. Heyn and O. Bauer, “Copper and Sulfur”,Metallurgie, 3, 73–82 (1906) in German. (Equi Diagram; Experimental)

13Bor: K. Bornemann and K. Wagenmann, “Electroconductivity of Metallic Alloys in Liquid State”,Ferrum, 11, 276–282 (1913); 11, 293–294 (1914), quoted in [Hansen]. (Equi Diagram; Experimental)

13Fri: K. Friedrich and M. Waehlert, “Investigation of Systems with Layer Formation. II. Copper-Copper Sulfide”,Metall. u. Erz., 10, 976–979 (1913) in German. (Equi Diagram; Experimental)

15Pos: E. Posnjak, E.T. Allen, and H.E. Merwin,Econ. Geol., 10, 491–535 (1915);Z. Anorg. Allg. Chem., 94, 95–138 (1916) in German. (Equi Diagram; Experimental)

29Jou: J.G. Joukoff, “On the Solubility of Cu-Sulfides in Cu-S at High Temperatures”,Metall. u. Erz., 26, 137–141 (1929) in German. (Equi Diagram; Experimental)

32Oft: I. Oftedal, “Crystal Structure of Covellite, CuS”,Z. Krist., 83, 9–25 (1932) in German. (Crys Structure; Experimental)

Indicates key paper36Rah: P. Rahlfs, “Cubic High Temperature Modifications of Sulfides, Selinides and Tellurides of Ag and of Univalent Cu”,Z. Phys. Chem., B31, 157–194 (1936) in German. (Crys Structure; Experimental)

37Mer: H.E. Merwin and R.H. Lombard, “The System Cu-Fe-S”,Econ. Geol., 32(2), 203–284 (1937). (Equi Diagram; Experimental)

38Smi: C.S. Smith, “Cu Alloys Containing S, Se and Te”,Trans. AIME, 128, 325–336 (1938). (Equi Diagram; Experimental)

41Bue1: N.W. Buerger, “The Chalcocite Problem”,Econ. Geol., 36, 19–44 (1941). (Crys Structure; Experimental)

42Bue1: M.J. Buerger and N.W. Buerger, “Structural Relations Between High and Low Chalcocite”,Am. Miner., 27, 216–217 (1942). (Crys Structure; Experimental)

42Bue2: N.W. Buerger, “X-ray Evidence of Existence of Mineral Digenite Cu9S5”,Am. Miner., 27, 712–716 (1942). (Crys Structure; Experimental)

Indicates key paper44Bue: M.J. Buerger and N.W. Buerger, “Low Chalcocite and High Chalcocite”,Am. Miner., 29, 55–65 (1944). (Crys Structure; Experimental)

46Sma: J.S. Smart and A.A. Smith, “Effect of P, As, S and Se on Some Properties of High Purity Cu”,Trans. AIME, 166, 144–155 (1946). (Equi Diagram; Experimental)

Indicates key paper47Jen: E. Jensen, “Melting Relations of Chalcocite”,Avhandl. Norske Videnskaps-Akad. Olso, I. Mat.-Naturw. Kl., 6, 1–14 (1947). (Equi Diagram; Experimental; Indicates presence of a phase diagram)

49Ued: R. Ueda, “X-ray and Thermal Studies of Phase Transformations of Cuprous Sulfide”,J. Phys. Soc. Jpn., 4, 287–292 (1949). (Equi Diagram; Experimental)

50Sud1: K. Sudo, “The Equilibrium in Reduction of Solid Cuprous Sulfide by Hydrogen Gas”,Sci. Rep. Res. Inst., Tohoku Univ., A2, 513–518 (1950). (Thermo; Experimental)

50Sud2: K. Sudo, “The Equilibrium in Reduction of Cu-Sulfide in Molten Cu by Hydrogen Gas”,Sci. Rep. Res. Inst., Tohoku Univ., A2, 519–530 (1950). (Thermo; Experimental)

50Tan: T. Tanaka, K. Watanabe, and J. Kurihara, “Physical Chemistry of Cu Metallurgy. II. Reduction Equilibria of Cuprous Sulfide and Hydrogen”,Mem. Fac. Eng., Hokkaido Univ., 8(1), 14–22 (1950), quoted in [68Arn]. D. Arndt and E. Kordes, “Anomalies in Equilibrium of Reaction [Cu2S]+(H2)⇆2[Cu]+(H2S)”,Z. Anorg. Allg. Chem., 359, 1–13 (1968). (Thermo; Experimental)

51Hir: E. J. Hirahara, “Physical Properties of Cuprous Sulfide Semiconductors”,J. Phys. Soc. Jpn., 6, 422–427 (1951);2, 211–213 (1947). (Equi Diagram; Experimental)

51Sch: R. Schumann and O. W. Moles, “S Activities in Liquid Cu-Sulfide”,Trans. AIME, 191, 235–241 (1951). (Equi Diagram, Thermo; Experimental)

52NBS: Results from Nat. Bur. Std., Washington, DC (1952), quoted in [53Bro]. A. A. Brooks, “Thermodynamic Study of the Equilibrium 2Cu(s)+H2S(g)=Cu2S(γ)+H2(g)”,Am. Chem. Soc. J., 75, 2464–2467 (1953). (Thermo; Compilation)

52Ruh: W. Ruhl, Diplomarbeit, Univ. of Erlangen (Germany) (1952), quoted by [58Dju]. S. Djurle, “X-ray Study of Cu-S System”,Acta Chem. Scand., 12, 1415–1426 (1958). (Crys Structure; Experimental)

52Smi: D. Smith, Ph. D. thesis, M.I.T., MA, U.S.A. (1952), quoted in [60Joh]. F. Johannsen and H. Vollmer, “Study of Copper-Copper Sulfide System”,Z. Erzbergbau. Metallhuettenwes., 13, 313–322 (1960) in German. (Equi Diagram; Experimental)

53Bro: A. A. Brooks, “Thermodynamic Study of the Equilibrium 2Cu(s)+H2S(g)=Cu2S(γ)+H2(g)”,Am. Chem. Soc. J., 75, 2464–2467 (1953). (Thermo; Experimental)

54Ber: L. G. Berry, “Crystal Structure of Covellite, CuS, and Klockmannite, CuSe”,Am. Miner., 39, 504–509 (1954). (Crys Structure; Experimental)

54Kri: W. A. Krivsky, Ph. D. thesis, M.I.T., MA, U.S.A. (1954), quoted in [60Joh]. F. Johannsen and H. Vollmer, “Study of Copper-Copper Sulfide System”,Z. Erzbergbau. Metallhuettenwes., 13, 313–322 (1960) in German. (Equi Diagram; Experimental)

55Don: J. D. H. Donnay, “Lattice of Rhombohedral S”,Acta Cryst., 8, 245 (1955). (Crys Structure; Experimental)

55Ric: F. D. Richardson and J. E. Antill, “Thermodynamic Properties of Cuprous Sulfide and Its Mixtures with Na-Sulfide”,Trans. Farad. Soc., 51, 22–33 (1955). (Thermo; Experimental)

Indicates key paper57Ruh: W. Ruhl and E. Saur, “X-ray Study and Phase Diagram of Cupric Sulfide—Cuprous Sulfide System”,Ber. Oberhess, Ges. Naturw. Heilk. Giessen, Naturw. Abt., 28, 35–47 (1957) in German. (Equi Diagram, Crys Structure; Experimental; Information from this paper used in drawing evaluated phase diagrams)

57Wag: J. B. Wagner and C. J. Wagner, “Investigations on Cuprous Sulfide”,J. Chem. Phys., 26, 1602–1606 (1957);J. Electrochem. Soc., 104, 509–511 (1957). (Thermo; Experimental)

Indicates key paper58Dju: S. Djurle, “X-ray Study of Cu-S System”,Acta Chem. Scand., 12, 1415–1426 (1958). (Crys Structure, Meta Phases; Experimental)

58Don: G. Donnay, J. H. D. Donnay, and G. Kullerud, “Crystal and Twin Structure of Digenite, Cu9S5”,Am. Miner., 43, 228–242 (1958). (Crys Structure; Experimental)

58Kub: O. Kubaschewski and E. L. Evans,Metallurgical Thermochemistry, 3rd ed., Pergamon Press, New York (1958). (Thermo; Compilation)

58Kul: G. Kullerud, “The Cu-S System”,Carnegie Inst. Yearbook, 57, 215–218 (1958);56, 195–197 (1957). (Equi Diagram; Experimental)

59Fre: G. Frenzel, “Idaite, a New Mineral, Natural Cu5FeS6”,Neues Jahrb. Miner. Abh., 93, 87–132 (1959) in German. (Meta Phases; Experimental)

Indicates key paper59Oud: J. Oudar, “Solubility of S in Cu at 600–1000o”,Compt. Rend., 249, 259–261 (1959) in French. (Equi Diagram; Experimental)

Indicates key paper60Joh: F. Johannsen and H. Vollmer, “Study of Copper-Copper Sulfide System”,Z. Erzbergbau. Metallhuettenwes., 13, 313–322 (1960) in German. (Equi Diagram; Experimental; Information from this paper used in drawing evaluated phase diagrams)

60Kel: K. K. Kelly, “Data on Theoretical Metallurgy. XIII. High Temperature Heat Capacity and Entropy Data for Elements and Inorganic Compounds”, U.S. Bur. Mines, Bull. 584 (1960). (Thermo; Compilation)

60Kul1: G. Kullerud, “The Cu-S System”,Carnegie Inst. Yearbook, 59, 110–120 (1960). (Equi Diagram; Compilation)

60Kul2: G. Kullerud and R. A. Yund, “Cu-S System”,Geol. Soc. Am. Bull., 71, 1911–1912 (1960). (Equi Diagram; Experimental)

60Weh: V. Wehefritz, “The System Cu-S”,Z. Phys. Chem. N. F., 26, 339–359 (1960) in German. (Equi Diagram; Experimental)

61Coo: A. S. Cooper, W. L. Bond, and S. C. Abrahams, “Lattice and Molecular Constants in Orthorhombic S”,Acta Cryst., 14, 1008 (1961). (Crys Structure; Experimental)

61Fre: G. Frenzel, “The Cu Excess of ‘Blue-Remaining’ Covellite”,Neues Jahrb. Miner. Monatsh., 9, 199–204 (1961) in German. (Meta Phases; Experimental)

61Kel: K. K. Kelley and E. G. King, “Data on Theoretical Metallurgy. XIV. Entropies of Elements and Inorganic Compounds”, U. S. Bur. Mines, Bull. 592, 1–149 (1961). (Thermo; Compilation)

62Mor: N. Morimoto, “Djurleite, a New Cu-Sulfide Mineral”,Miner. J., 3, 338–344 (1962). (Equi Diagram; Experimental)

62Ros: E. H. Roseboom, “Djurleite, Cu1.96S, a New Mineral”,Am. Miner., 47, 1181–1184 (1962). (Equi Diagram; Experimental)

63Bue: M. J. Buerger and B. J. Wuensch, “Distribution of Atoms in High Chalcocite, Cu2S”,Science, 141, 276–277 (1963). (Crys Structure; Experimental)

63Moh: G. H. Moh, “Low Temperature Sulfide Synthesis”,Carnegie Inst. Yearbook, 62, 214–215 (1963);63, 208–209 (1964). (Meta Phases; Experimental)

63Mor: N. Morimoto and G. Kullerud, “Polymorphism in Digenite”,Am. Miner., 48, 110–213 (1963). (Equi Diagram, Crys Structure; Experimental)

63Wil: H. Wilman, “Electron Diffraction Results on Thermal Transformations and Structures of Phases in Cu-S and Ag-S Systems”,Acta Cryst., 16(2), A182-A183 (1963). (Crys Structure; Experimental)

63Wue: B. J. Wuensch and M. J. Buerger, “Crystal Structure of Chalcocite, Cu2S”,Miner. Soc. Am. Spec., Paper 1, 164–170 (1963). (Crys Structure; Experimental)

64Eli: E. N. Eliseev, L. E. Rudenko, L. A. Sinev, B. L. Koshurinikov, and N. I. Solovov, “Polymorphism of Cu-Sulfides in System Cu2S-Cu1.86S”,Miner. Sb. L’vovsk, Gos. Univ., 18(4), 385–400 (1964) in Russian. (Meta Phases; Experimental)

64Gat: G. Gattow and O. Rosenberg, “Copper-Sulfur Compounds of Type CuS>1”,Naturwiss., 51(9), 213 (1964) in German. (Equi Diagram; Experimental)

64Jan: A. Janosi, “Structure of Tetragonal Cuprous Sulfide”,Acta Cryst., 17(3), 311–312 (1964) in French. (Crys Structure; Experimental)

65Kul: G. Kullerud, “Covellite Stability Relations in Cu-S System”,Freiber. Forschung., C186, 145–160 (1965). (Equi Diagram; Experimental)

65Sad: R. Sadanaga, M. Ohmasa, and N. Morimoto, “Statistical Distribution of Cu Ions in Structure of β Chalcocite”,Miner. J. (Tokyo),4(4), 275–290 (1965), reported in [71Eva]. (Crys Structure; Experimental)

66Mun: R. A. Munson, “Synthesis of Copper Sulfide”,Inorg. Chem., 5(7), 1296–1297 (1966). (Meta Phases, Crys Structure, Pressure; Experimental)

Indicates key paper66Ros: E. H. Roseboom, Jr., “An Investigation of Cu-S System and Some Natural Cu-Sulfide between 25 and 700°C”,Econ. Geol., 61, 641–672 (1966). (Equi Diagram, Meta Phases; Experimental; Information from this paper used in drawing evaluated phase diagrams)

67Rau: H. Rau, “Defect Equilibria in Cubic High Temperature Cu-Sulfide (Digenite)”,J. Phys. Chem. Solids, 28, 903–916 (1967). (Equi Diagram, Thermo; Experimental; Information from this paper used in drawing evaluated phase diagrams)

67Tak: H. Takeda, J. D. H. Donnay, E. H. Roseboom, and D. E. Appleman, “Crystallography of Djurleite, Cu1.97S”,Z. Krist., 125, 404–413 (1967). (Crys Structure; Experimental)

68Arn: D. Arndt and E. Kordes, “Anomalies in Equilibrium of Reaction [Cu2S]+(H2)⇆2[Cu]+(H2S)”,Z. Anorg. Allg. Chem., 359, 1–13 (1968). (Thermo; Experimental)

68Rob: R. A. Robie and D. R. Waldbaum, “Thermodynamic Properties of Minerals and Related Substances at 298.15 K and One Atmosphere Pressure and at Higher Temperature”, U. S. Geol. Surv. Bull.,1259, 256 (1968). (Thermo; Compilation)

68Sod: J. Sodi and J. F. Elliott, “Free Energy of Formation of Re-Sulfide”,Trans. AIME, 242(10), 2143–2145 (1968). (Thermo; Experimental)

69Cav: P. Cavallotti and G. Salvago, “Electrode Behavior of Cu-Sulfides in Aqueous Solutions”,Electrochim. Metall., 4, 181–210 (1969), quoted in [77Pot]. R. W. Potter, II, “An Electrochemical Investigation of the System Cu-S”,Econ. Geol., 72(8), 1524–1542 (1977). (Meta Phases; Experimental)

69Hin: E. Hinze and A. Neuhaus, “Reflection Microscopic and X-ray Studies of Cuprous Sulfide, Cu-Selenide and Cu Telluride at Pressures up to 80 Kilobars”,Naturwiss., 56(3), 136 (1969) in German. (Crys Structure; Experimental)

Indicates key paper69Kel: H. H. Kellog, “Thermochemical Properties of the System Cu-S at Elevated Temperature”,Can. Met. Quart., 8(1), 3–23 (1969). (Thermo; Experimental)

Indicates key paper69Mor: N. Morimoto, K. Koto, and Y. Shimazaki, “Anilite, Cu7S4, a New Mineral”,Am. Miner., 54, 1256–1268 (1969). (Equi Diagram, Crys Structure; Experimental; Information from this paper used in drawing evaluated phase diagrams)

69Sil: R. H. Sillitoe and A. H. Clark, “Cu and Cu-Fe Sulfides as Initial Products of Supergene Oxidation, Copiapo Mining District, Northern Chile”,Am. Miner., 54, 1684–1710 (1969). (Meta Phases; Experimental)

69Wag: D. D. Wagman, W. H. Evans, V. B. Parker, I. Halow, S. M. Bailey, and R. H. Schumm, “Selected Values of Chemical Thermodynamic Properties”, U. S. Nat. Bur. Stand. Tech. Note 270–4, 141 (1969). (Thermo; Compilation)

70Cla: J. B. Clark and E. Rapoport, “Effect of Pressure on Solid-Solid Transitions in Some Ag and Cuprous Chalcogenides”,J. Phys. Chem. Solids, 31, 247–254 (1970). (Equi Diagram, Pressure; Experimental)

70Coo: W. R. Cook, Jr., L. Shiozawa, and F. Augustine, “Relationship of Cu-Sulfide and Cd-Sulfide Phases”,J. Appl. Phys., 41(7), 3058–3063 (1970). (Meta Phases, Crys Structure; Experimental)

70Fla: A. Flamini and O. Grubessi, “...Digenite, Cu1.96S, Chalcocite”,Period. Miner., Spec. Vol.,39A, 243–263 (1970) quoted in [77Pot]. R. W. Potter, II, “An Electrochemical Investigation of the System Cu-S”,Econ. Geol., 72(8), 1524–1542 (1977). (Meta Phases; Experimental)

70Kaz: M. M. Kazinets, “Structure of Some Phases of a Cu-S System”,Kristallogr., 14(4), 704–706 (1970) in Russian; TR:Sov. Phys.—Crystall., 14(4), 599–600 (1970). (Crys Structure; Experimental)

70Kot: K. Koto and N. Morimoto, “Crystal Structure of Anilite”,Acta Cryst., B26(7), 915–924 (1970). (Crys Structure; Experimental)

Indicates key paper70Mor: N. Morimoto and K. Koto, “Phase Relations of Cu-S System at Low Temperatures: Stability of Anilite”,Am. Miner., 55(1–2), 106–117 (1970). (Equi Diagram, Meta Phases, Crys Structure; Experimental)

70Ski: B. J. Skinner, “Stability of Tetragonal Polymorph of Cu(I) Sulfide”,Econ. Geol., 65(6), 724–728 (1970). (Meta Phases, Pressure; Experimental)

70Vai: F. C. Vaissiere: thesis, Montpellier, France (1970), quoted in [74Dum]. A. Dumon, A. Lichanot, and S. Gromb, “Study of Cu-S Phase Diagram in Compositional Area Cu2.000S-Cu1.960S”,J. Chim. Phys., 71(3), 407–414 (1974) in French. (Equi Diagram; Experimental)

71Cla1: A. H. Clark and R. H. Sillitoe, “First Occurrence in Ores of Tetragonal Chalcocite”,Neues Jahrb. Miner. Monatsh, 2, 418–424 (1971). (Meta Phases; Experimental)

71Cla2: A. H. Clark and R. H. Sillitoe, “Supergene Anilite from Mina Estrella (Salado), Atacama, Chile”,Neues Jahrb. Miner. Monatsh, 2, 515–523 (1971). (Equi Diagram; Experimental)

71Eri: G. Eriksson, “Thermodynamic Studies of High Temperature Equilibrium: II. Calculation of Free Energy Function and Heat Content Function for Solid (Cu, S, O) Substances”,Acta Polytech. Scand., 99, 19–32 (1971). (Thermo; Experimental)

Indicates key paper71Eva: H. T. Evans, Jr., “Crystal Structure of Low Chalcocite”,Nat. Phys. Sci., 232(29), 69–70 (1971). (Crys Structure; Experimental)

71Moh: G. H. Moh, “Blue-Remaining Covellite and Its Relations to Phases in S-rich Portion of Cu-S System at Low Temperatures”, Miner. Soc. Jpn. Spec. Paper 1, 226–232 (1971). (Meta Phases; Experimental)

71Mor: N. Morimoto and A. Gyobu, “Composition and Stability of Digenite”,Am. Miner., 56, 1189–1909 (1971). (Equi Diagram, Meta Phases, Crys Structure; Experimental; Information from this paper used in drawing evaluated phase diagrams)

71Tay: L. A. Taylor and G. Kullerud, “Pyrite Type Compounds”,Carnegie Inst. Wash. Yearbook, 69, 322–325 (1971);Neues Jahrb. Miner. Monatsh, 10, 458–464 (1972). (Meta Phases, Crys Structure; Experimental)

71Van: A. V. Vanyukov, V. P. Bystrov, and V. A. Snurnikova, “Phase Equilibria in Cu-S System”,Tsvet. Metal., 44(11), 11–15 (1971) in Russian; TR:Sov. J. Non-Ferr. Met., 44(11), 11–14 (1971). (Equi Diagram; Experimental)

72Cla: A. H. Clark, “Natural Occurrence of Hexagonal Cu1.83S in Rancagua, Chile”,Nature, 238(86), 123–124 (1972). (Meta Phases; Experimental)

Indicates key paper72Coo: W. R. Cook, Jr., “Phase Changes in Cu2S as a Function of Temperature”, Natl. Bur. Stds. (U.S.A.) Spec. Publ. 364, 703–712 (1972);

Ph.D. thesis, Case Western Reserve University, Cleveland, OH; Gould Labs Univ. Microfilm Order No. 72-27 (1971). (Equi Diagram; Experimental; Information from this paper used in drawing evaluated phase diagrams)

72Luq: H. Luquet, F. Guastavino, J. Bougnot, and J. C. Vaissiere, “Study of Cu-S System between Cu1.78S-Cu2.1S by Differential Thermal Analysis”,Mater. Res. Bull., 7, 955–962 (1972) in French. (Equi Diagram, Meta Phases; Experimental)

72Mat: H. J. Mathieu and H. Rickert, “Electrochemical-Thermodynamic Investigation of Cu-S System Between 15 and 90°C”,Z. Phys. Chem. N. F., 79, 315–330 (1972) in German. (Thermo, Equi Diagram; Experimental)

72Ric: D. T. Rickard, “Covellite Formation in Low Temperature Aqueous Solutions”,Miner. Depos., 7(2), 180–188 (1972);Tscheermaks Miner. Petrog. Mitt, 19(1), 60–75 (1973), quoted in [77Pot]. R. W. Potter, II, “An Electrochemical Investigation of the System Cu-S”,Econ. Geol., 72(8), 1524–1542 (1977). (Meta Phases; Experimental)

73Bar: P. B. Barton, Jr., “Solid Solutions in System Cu-Fe-S. Part I: The Cu-S and CuFe-S Joins”,Econ. Geol., 68, 455–465 (1973). (Equi Diagram; Experimental)

73Fla: A. Flamini, G. Graziani, and O. Grubessi, “A New Synthetic Phase in Cu-S System”,Period. Miner., 42, 257–265 (1973). (Meta Phases; Experimental)

73Gob: R. J. Goble and D. G. W. Smith,Can. Miner., 12, 95–103 (1973). (Equi Diagram, Meta Phases; Experimental)

73Kin: L. G. King, A. D. Mah, and L. B. Pankratz, “Thermodynamic Properties of Cu and Its Inorganic Compounds”,Intl. Copper Res. Assoc., Mon., No. 11, 257 (1973). (Thermo; Compilation)

73Mul: B. J. Mulder, “Protodjurleite, a Metastable Form of Cuprous Sulfide”,Krist. Tech., 8(7), 825–832 (1973). (Meta Phases; Experimental)

74Bur: B. P. Burylev, N. N. Fedorova, and L. Sh. Tsemekhman, “Phase Diagrams of Cu-S, Cu-Se and Cu-Te Systems”,Zh. Neorg. Khim., 19, 2283–2285 (1974) in Russian; TR:Russ. J. Inorg. Chem., 19(8), 1249–1250 (1974). (Equi Diagram; Experimental)

74Dum: A. Dumon, A. Lichanot, and S. Gromb, “Study of Cu-S Phase Diagram in Compositional Area Cu2.000S-Cu1.960S”,J. Chim. Phys., 71(3), 407–414 (1974) in French. (Equi Diagram; Experimental; Information from this paper used in drawing evaluated phase diagrams)

74Mil: K. C. Mills,Thermodynamic Data for Inorganic Sulphides, Selenides and Tellurides, Butterworths, London (1974). (Thermo; Compilation)

Indicates key paper74Rau: H. Rau, “Homogeneity Range of Cubic High Temperature Cuprous Sulfide (Digenite)”,J. Phys. Chem. Solids, 35, 1415–1424 (1974). (Equi Diagram, Thermo; Experimental; Information from this paper used in drawing evaluated phase diagrams)

75Gor: S. S. Gorelik, A. N. Dubrovina, R. Kh. Leksina, T. Turdaliev, and Yu. M. Ukrainskii, “Dilatometric and X-Ray Investigation of Copper Chalcogenides at 20–700°C”,Izv. Akad. Nauk SSSR, Neorg. Mater., 11(1), 28–32 (1975) in Russian; TR:Inorg. Mater., 11(1), 21–24 (1975). (Crys Structure; Experimental)

76Bal: C. W. Bale and J. M. Toguri, “Thermodynamics of Cu-S, Fe-S and Cu-Fe-S Systems”,Can. Met. Quart., 15(4), 305–318 (1976). (Equi Diagram, Thermo; Experimental)

76Eva: H. T. Evans, Jr. and J. A. Konnert, “Crystal Structure Refinement of Covellite”,Am. Miner., 61, 996–1000 (1976). (Crys Structure; Experimental)

Indicates key paper76Kel: H. H. Kellog, “Thermochemical Modelling of Molten Sulfides”,Physical Chemistry in Metallurgy, R. M. Fischer, R. A. Oriani, and E. T. Turkdogan, Ed., U. S. Steel Res. Lab., Monroeville, PA, 49 (1976). (Thermo; Experimental)

76Nag: M. Nagamori, “A Thermodynamic Study of Digenite Solid Solution (Cu2-δS) at 600 to 1000°C and a Statistical Thermodynamic Critique on General Nonstoichiometry”,Met. Trans., 7B, 67–80 (1976). (Thermo; Experimental)

76Pot: R. W. Potter, II and H. T. Evans, Jr., “Definitive X-ray Powder Data for Covellite, Anilite, Djurleite and Chalcocite”,U. S. Geol. Survey J. Res., 4, 205–212 (1976). (Crys Structure; Experimental)

76Vai: J. C. Vaissiere and F. M. Roche, “Contribution to Study of Phase Diagram of Cu x S (1.75≤x≤2) Between 10 and 200°C”,Mater. Res. Bull., 11(7), 851–856 (1976). (Equi Diagram; Experimental)

Indicates key paper77Pot: R. W. Potter, II, “An Electrochemical Investigation of the System Cu-S”,Econ. Geol., 72(8), 1524–1542 (1977). (Equi Diagram, Meta Phases, Thermo; Experimental; Information from this paper used in drawing evaluated phase diagrams)

79Jud: V. P. Judin and E. Eerola, “Thermodynamics of Metallic Impurities in Cu-Saturated Cu-Sulfide Melts”,Scand. J. Metall., 8, 128–132 (1979). (Thermo, Equi Diagram; Experimental; Information from this paper used in drawing evaluated phase diagrams)

79Kub: O. Kubaschewski and E. L. Evans,Metallurgical Thermochemistry, 5th ed., Pergamon Press, NY (1979). (Thermo; Compilation)

79Lar: J. M. Larrain, L. L. Sang, and H. H. Kellog, “Thermodynamic Properties of Cu-S Melts”,Can. Met. Quart., 18, 395–400 (1979). (Thermo, Equi Diagram; Theory)

79Mou: M. Moulki and J. Osterwald, “Miscibility Gap between Liquid Cu and Liquid Cu-Sulfide”,Z. Metallkd., 70(12), 808–810 (1979) in German. (Equi Diagram; Experimental)

79Sha: R. C. Sharma and Y. A. Chang, “A Thermodynamic Equation of State for Digenite, Cu2-δS”,Chin. J. Mater. Sci., 11(1), 58–62 (1979). (Thermo; Theory)

Indicates key paper80Sha: R. C. Sharma and Y. A. Chang, “A Thermodynamic Analysis of Cu-S System”,Met Trans., 11B, 575–583 (1980). (Thermo, Equi Diagram; Theory; Information from this paper used in drawing evaluated phase diagrams)

81BAP: Bull. Alloy Phase Diagrams, 2(1), 145–146 (1981), quoting melting points of elements on the 1968 temperature scale. (Equi Diagram; Compilation; Information from this paper used in drawing evaluated phase diagrams)

81Hub: C. R. Hubbard and D. L. Calvert, “The Pearson Symbol”,Bull. Alloy Phase Diagrams, 2(2), 153–157 (1981). (Crys Structure; Review)