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Dzhezkazganite

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Formula:
ReMoCu2PbS6 ?
Uncertain formula.
Colour:
Grey
Lustre:
Metallic
Hardness:
4
Crystal System:
Trigonal
Originally described from Dzhezkazgan Mine (Zhezkazgan Mine), Dzhezkazgan, Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast'), Kazakhstan. Occurs with bornite, chalcocite, and galena in a sandstone.

One of a very few rhenium-dominant minerals; compare, e.g., rheniite, rhenium, tarkianite, and 'UM1986-51-S:Re'.


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Classification of DzhezkazganiteHide

Discredited
2/D.26-10

2 : Sulphides
D : Sulphides with metal: sulphur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold
26 : Molybdenite series
Dana 7th ed.:
2.0.0.0

Physical Properties of DzhezkazganiteHide

Metallic
Colour:
Grey
Hardness:
Hardness:
VHN50=206 kg/mm2 - Vickers

Optical Data of DzhezkazganiteHide

Type:
Isotropic
Reflectivity:
400nmR=34.4%
440nmR=33.7%
480nmR=33.5%
520nmR=33.5%
560nmR=33.3%
600nmR=32.9%
640nmR=32.3%
680nmR=31.5%
720nmR=30.4%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 34.4%.
Colour in reflected light:
cream

Chemical Properties of DzhezkazganiteHide

Formula:
ReMoCu2PbS6 ?

Uncertain formula.
Common Impurities:
Fe,Ag

Crystallography of DzhezkazganiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 3.22(3) Å, c = 18.54(3) Å
Ratio:
a:c = 1 : 5.758
Unit Cell V:
166.48 ų (Calculated from Unit Cell)
Comment:
by analogy to molybdenite-3R, which has similar electron diffraction pattern; crystal system formerly set to isometric

Other Language Names for DzhezkazganiteHide

Simplified Chinese:辉铼铜矿

Other InformationHide

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

References for DzhezkazganiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
A.D. Genkin, Poplavko, E.M., A.I. Gorshhov, A.I., Tsepin, A.I., Sivtsov, A.V. (1994): New data on dzhezkazganite - rhenium-molybdenum-copper-lead sulfide - from the Dzhezkazgan deposit (Kazakhstan). Geol. Ore Deposits: 36(6): 481-489 (translation from Geol. Rudnykh Mestorozhdenii: 36: 536-544); in: Jambor J L, Puziewicz J, Roberts A C (1995): New mineral names. American Mineralogist 80, 1328-1333. [confirms Rhenium in formula but the species was not reapproved].

Internet Links for DzhezkazganiteHide

Localities for DzhezkazganiteHide

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Kazakhstan
 
  • Karaganda
[AmerMin 48 (1963), 209]; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Mineral and/or Locality  
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