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Gruzdevite

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Formula:
Cu
 
6
Hg
 
3
Sb
 
4
S
 
12
System:TrigonalColour:grey-black
Hardness:4 - 4½
Name:For V. S. Gruzdev (1938-1977), Russian mineralogist


Series with Aktashite

Classification of Gruzdevite

IMA status:Approved 1980
Strunz 8th edition ID:2/C.12-40
Nickel-Strunz 10th (pending) edition ID:2.GA.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
Dana 8th edition ID:3.4.13.3

3 : SULFOSALTS
4 : ø = 3
Hey's CIM Ref.:5.4.7

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
4 : Sulpharsenites etc. of Zn and Hg
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Type Occurrence of Gruzdevite

Type Locality:Chauvai (Chauvay) Sb-Hg Deposit, Alai (Alay) Range, Osh Oblast, Kyrgyzstan
Place of Conservation of Type Material:Fernsman Museum
Year of Discovery:1981
Geological Setting of type material:Low temperature hydrothermal
Associated Minerals at type locality:
AktashiteCinnabarMetacinnabarWurtziteFluorite
CalciteBaryteStilbite

Physical Properties of Gruzdevite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:grey-black
Hardness (Mohs):4 - 4½
Cleavage:None Observed
Density (calculated):5.88 g/cm3

Crystallography of Gruzdevite

Crystal System:Trigonal
Cell Parameters:a = 13.90(2) Å, c = 9.432Å
Ratio:a:c = 1 : 0.679
Unit Cell Volume:V 1,578.21 ų (Calculated from Unit Cell)
Z:3
Morphology:Massive

Optical Data of Gruzdevite

Type:Anisotropic
Anisotropism:Weak
Reflectivity:
460nmR=33.1%
540nmR=32.8%
580nmR=32.7%
660nmR=31.9%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 33.1%.
Colour in reflected light:White

Chemical Properties of Gruzdevite

Formula:
Cu
 
6
Hg
 
3
Sb
 
4
S
 
12
Essential elements:Cu, Hg, S, Sb
All elements listed in formula:Cu, Hg, S, Sb
Common Impurities:Fe,As

Relationship of Gruzdevite to other Species

Series:Forms a series with Aktashite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
2.GA.05Proustite
Ag
 
3
AsS
 
3
2.GA.05Pyrargyrite
Ag
 
3
SbS
 
3
2.GA.10Pyrostilpnite
Ag
 
3
SbS
 
3
2.GA.10Xanthoconite
Ag
 
3
AsS
 
3
2.GA.15Samsonite
Ag
 
4
MnSb
 
2
S
 
6
2.GA.20Skinnerite
Cu
 
3
SbS
 
3
2.GA.20Wittichenite
Cu
 
3
BiS
 
3
2.GA.25Lapieite
NiCuSbS
 
3
2.GA.25Mückeite
NiCu(Bi,Sb)S
 
3
2.GA.25Malyshevite
PdCuBiS
 
3
2.GA.25Lisiguangite
PtCuBiS
 
3
2.GA.30Aktashite
Cu
 
6
Hg
 
3
As
 
4
S
 
12
2.GA.30Nowackiite
Cu
 
6
Zn
 
3
As
 
4
S
 
12
2.GA.35Laffittite
AgHgAsS
 
3
2.GA.40Routhierite
Tl(Cu,Ag)(Hg,Zn)
 
2
(As,Sb)
 
2
S
 
6
2.GA.40Stalderite
Tl(Cu,Ag)(Zn,Fe,Hg)
 
2
(As,Sb)
 
2
S
 
6
2.GA.45Erniggliite
Tl
 
2
SnAs
 
2
S
 
6
2.GA.50Bournonite
PbCuSbS
 
3
2.GA.50Seligmannite
PbCuAsS
 
3
2.GA.50Součekite
PbCuBi(S,Se)
 
3
Related Minerals - Hey's Index Grouping:

- +
5.4.1Nowackiite
Cu
 
6
Zn
 
3
As
 
4
S
 
12
5.4.2Florensovite
(Cu,Zn)Cr
 
1.5
Sb
 
0.5
S
 
4
5.4.3Aktashite
Cu
 
6
Hg
 
3
As
 
4
S
 
12
5.4.4Laffittite
AgHgAsS
 
3
5.4.5Galkhaite
(Cs,Tl)(Hg,Cu,Zn)
 
6
(As,Sb)
 
4
S
 
12
5.4.6Livingstonite
HgSb
 
4
S
 
8
5.4.8Tvalchrelidzeite
Hg
 
3
SbAsS
 
3
5.4.9Hakite
(Cu,Hg,Ag)
 
12
Sb
 
4
(Se,S)
 
13

Other Names for Gruzdevite

Synonyms:
IMA1980-053
Other Languages:
German:Gruzdevit
Spanish:Gruzdevita

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 Gruzdevite

Reference List:

- +
American Mineralogist: 67: 855.

Doklady Akademii Nauk SSSR: 261: 971-976.

Internet Links for Gruzdevite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    • Localities for Gruzdevite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (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.
    Kyrgyzstan
     
    • Osh Oblast
      • Alai (Alay) Range
    		[DAN-SSSR,(1981) 261, 971-976; Lapis 1993:11 p11-24]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    		Lapis 2001(1), 11-40
    Handbook of Mineralogy
    USA
     
    • Nevada
      • Eureka Co.
        • Lynn District
    		NBMG Spec. Pub. 31 Minerals of Nevada
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