Copper, sulfosalts

Chalcocite [22205-45-4] [Named from the Greek, chalkos, copper] (ICSD 100333 and PDF 33-490) Cu,S Ms 159.158 79.85 wt.% Cu 20.15 wt.%S (Sulfides and sulfosalts) Orthorhombic as 1188.1 pm bs 273.23 pm cs 1349.1 pm (Zs 96) Cuprite type Biaxial R = 32.2% 2.5-3 (HV 68-98) 5800 Habit massive, granular, euhedral crystals. Color black or iron black. Luster metallic. Diaphaneity opaque. Streak grayish black. Qea ige 110 indistinct. Twinning II0, 032, 112. Fracture Conchoidal. Occurrence secondary mineral in/near the oxidized zone of copper sultide ore deposits. Others p-type semiconductor with = 0.06 eV-0.13eV. Electrical resistivity 80 to 100 jQ.cm.> melting point of 1100 C... 

Niccolite (syn., nickeline) [Named from the old German, nickel, meaning an ore which is not useful ] (ICSD 31062 and PDF 47-1737) NiAs M= 133.61159 43.92 wt.% Ni 56.08 wt.% As Traces of Fe> S, Co,Sb, Bi,and Cu (Sulfides and sulfosalts) Coordinence Ni(6) Hesigonal a = 360.9 pm c= 501.9 pm B8 hP4 (2=2) S.G. P6,/mmc P.G. 622 Niccolite type Uniaxial R = 52.0-58.3% 5-5.5 (HV 308- 455) 7780 Habit massive, reniform, columnar. Color dark tarnish red or pale copper red. Luster metallic. Diaphandty opaque. Streak brownish black. Geavage 1010 imperfect, 0001 imperfect Fracture uneven, brittle Chemical dissolved by aqua regia. Electrical resistivity 0.1 to 2 mQ.cm. Occurrence in ore veins with silver, copper, and nickel arsenides and sultides. 

Lead PbS Bismuth Bi Arsenic As Copper ( ) Cu Antimony (Sb Bi) Stibarsen SbAs Sulhdes and sulfosalts Cassiterite Rutile Ferrotapiolite Ferrocolumbite Manganocolumbite Manganotantalite Wodginite Ferrowodginite Titanowodginite... 

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