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Kochkarite

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Kochkar' Au Deposit, Kochkar' District, Plast, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
© Brent Thorne 2009




Formula:
PbBi
 
4
Te
 
7
System:TrigonalHardness:2 - 2½
Member of:Aleksite Group


Aleksite Group.

Classification of Kochkarite

IMA status:Approved
Strunz 8th edition ID:2/D.12-10
Nickel-Strunz 10th (pending) edition ID:2.GC.40b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
Dana 8th edition ID:2.6.3.1

2 : SULFIDES
6 : AmBnXp, with (m+n):p = 4:3
Hey's CIM Ref.:3.7.37

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
7 : Sulphides etc. of V, As, Sb and Bi
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Type Occurrence of Kochkarite

Type Locality:Kochkar' Au Deposit, Kochkar' District, Plast, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Year of Discovery:1989

Physical Properties of Kochkarite

Hardness (Mohs):2 - 2½

Crystallography of Kochkarite

Crystal System:Trigonal
Cell Parameters:a = 4.41Å, c = 72.09Å
Ratio:a:c = 1 : 16.347
Unit Cell Volume:V 1,214.18 ų (Calculated from Unit Cell)

Chemical Properties of Kochkarite

Formula:
PbBi
 
4
Te
 
7
Essential elements:Bi, Pb, Te
All elements listed in formula:Bi, Pb, Te

Relationship of Kochkarite to other Species

Member of:Aleksite Group
Other Members of Group:

- +
Aleksite
PbBi
 
2
Te
 
2
S
 
2
Babkinite
Pb
 
2
Bi
 
2
(S,Se)
 
3
Poubaite
PbBi
 
2
(Se,Te,S)
 
4
Rucklidgeite
(Bi,Pb)
 
3
Te
 
4
Saddlebackite
Pb
 
2
Bi
 
2
Te
 
2
S
 
3
Related Minerals - Nickel-Strunz Grouping):

- +
2.GC.05Hatchite
AgTlPbAs
 
2
S
 
5
2.GC.05Wallisite
(Cu,Ag)TlPbAs
 
2
S
 
5
2.GC.10Sinnerite
Cu
 
6
As
 
4
S
 
9
2.GC.15Watanabeite
Cu
 
4
(As,Sb)
 
2
S
 
5
2.GC.20Simonite
TlHgAs
 
3
S
 
6
2.GC.25Quadratite
Ag(Cd,Pb)AsS
 
3
2.GC.30Smithite
AgAsS
 
2
2.GC.35Trechmannite
AgAsS
 
2
2.GC.40aAleksite
PbBi
 
2
Te
 
2
S
 
2
2.GC.40cPoubaite
PbBi
 
2
(Se,Te,S)
 
4
2.GC.40cRucklidgeite
(Bi,Pb)
 
3
Te
 
4
2.GC.40eBabkinite
Pb
 
2
Bi
 
2
(S,Se)
 
3
2.GC.40dSaddlebackite
Pb
 
2
Bi
 
2
Te
 
2
S
 
3
2.GC.45Tvalchrelidzeite
Hg
 
3
SbAsS
 
3
2.GC.50Mutnovskite
Pb
 
4
As
 
2
S
 
6
ICl
Related Minerals - Hey's Index Grouping:

- +
3.7.1Patrónite
VS
 
4
3.7.2Duranusite
As
 
4
S
3.7.3Dimorphite
As
 
4
S
 
3
3.7.4Realgar
As
 
4
S
 
4
3.7.5Pararealgar
As
 
4
S
 
4
3.7.6Alacránite
As
 
8
S
 
9
3.7.7Uzonite
As
 
4
S
 
5
3.7.8Orpiment
As
 
2
S
 
3
3.7.9Jeromite
3.7.10Laphamite
As
 
2
(Se,S)
 
3
3.7.11Getchellite
AsSbS
 
3
3.7.12Wakabayashilite
[(As,Sb)
 
6
S
 
9
][As
 
4
S
 
5
]
3.7.13Pääkkönenite
Sb
 
2
AsS
 
2
3.7.14Stibnite
Sb
 
2
S
 
3
3.7.15Metastibnite
Sb
 
2
S
 
3
3.7.16Tellurantimony
Sb
 
2
Te
 
3
3.7.17Bismuthinite
Bi
 
2
S
 
3
3.7.18Nevskite
Bi(Se,S)
3.7.19Guanajuatite
Bi
 
2
(Se,S)
 
3
3.7.21Ikunolite
Bi
 
4
(S,Se)
 
3
3.7.22Laitakarite
Bi
 
4
Se
 
2
S
3.7.23Poubaite
PbBi
 
2
(Se,Te,S)
 
4
3.7.24Tellurobismuthite
Bi
 
2
Te
 
3
3.7.25Součekite
PbCuBi(S,Se)
 
3
3.7.26Tsumoite
BiTe
3.7.27Pilsenite
Bi
 
4
Te
 
3
3.7.28Hedleyite
Bi
 
7
Te
 
3
3.7.29Tetradymite
Bi
 
2
Te
 
2
S
3.7.30Joséite
Bi
 
4
TeS
 
2
3.7.31Joséite-B
Bi
 
4
Te
 
2
S
3.7.32Ingodite
Bi
 
2
TeS
3.7.33Sulphotsumoite
Bi
 
3
Te
 
2
S
3.7.34Kawazulite
Bi
 
2
Te
 
2
Se
3.7.36Skippenite
Bi
 
2
TeSe
 
2
3.7.38Rucklidgeite
(Bi,Pb)
 
3
Te
 
4
3.7.39Aleksite
PbBi
 
2
Te
 
2
S
 
2
3.7.40Junoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16

Other Names for Kochkarite

Synonyms:
IMA1988-030
Other Languages:
German:Kochkarit
Spanish:Kochkarita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kochkarite

Reference List:

- +
American Mineralogist (1991): 76: 1434.

Internet Links for Kochkarite

Search Engines:
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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Kochkarite details from Handbook of Mineralogy (PDF)
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    • Localities for Kochkarite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Stanovoi Range
          • Sutamskii Region
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Plast
            • Kochkar' District
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • Michigan
      • Marquette Co.
    		Mineralogy of Michigan (E. W. Heinrich & G. W. Robinson)
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