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Vozhminite

A valid IMA mineral species
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Formula:
(Ni,Co)4(As,Sb)S2
Type material contains minor Co and Sb, possibly stabilising the structure.
Colour:
Yellow with brownish tint
Lustre:
Metallic
Hardness:
4½ - 5
Specific Gravity:
6.2 (Calculated)
Crystal System:
Hexagonal
Name:
Named after its discovery locality, Vozhminskiy massif, Karelia, Russia.
Chemically related to gersdorffite.


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Unique IdentifiersHide

Mindat ID:
4210
Long-form identifier:
mindat:1:1:4210:5

IMA Classification of VozhminiteHide

Classification of VozhminiteHide

Strunz-mindat (2026):
2.BB.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
Dana 8th ed.:
2.3.6.1

2 : SULFIDES
3 : AmBnXp, with (m+n):p = 5:2
Hey's CIM Ref.:
5.8.19

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
8 : Sulpharsenites etc. of Mn, Fe, Co and Ni

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
VozIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of VozhminiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Yellow with brownish tint
Streak:
Black
Hardness:
4½ - 5 on Mohs scale
Hardness:
VHN100=436 kg/mm2 - Vickers
Cleavage:
Distinct/Good
one distinct
Density:
6.2 g/cm3 (Calculated)

Optical Data of VozhminiteHide

Anisotropism:
Distinct, in brownish tones.
Bireflectance:
Weak
Reflectivity:
WavelengthR1 (%)R2 (%)
420nm35.0%41.2%
440nm37.0%43.0%
460nm39.2%45.0%
480nm41.7%47.0%
500nm44.0%48.6%
520nm45.9%49.8%
540nm47.5%50.0%
560nm48.9%51.9%
580nm50.2%52.7%
600nm51.2%53.3%
620nm52.1%54.2%
640nm52.8%55.0%
660nm53.4%55.8%
680nm53.7%56.6%
700nm54.1%57.1%
720nm54.6%57.7%
740nm54.9%58.2%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 58.2%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Rose-orange

Chemistry of VozhminiteHide

Mindat Formula:
(Ni,Co)4(As,Sb)S2

Type material contains minor Co and Sb, possibly stabilising the structure.
Element Weights:
Element% weight
Ni62.803 %
As20.042 %
S17.155 %

Calculated from ideal end-member formula.
Elements listed:
As, Co, Ni, S, Sb - search for minerals with similar chemistry
Common Impurities:
Fe

Crystallography of VozhminiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 17.46(4) Å, c = 7.20(1) Å
Ratio:
a:c = 1 : 0.412
Unit Cell V:
1,900.87 ų (Calculated from Unit Cell)
Z:
18
Morphology:
Massive(?).
Comment:
Point group and space group not determined.

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of VozhminiteHide

Type Locality:
ⓘ Vozhminskii Massif (Vozhmin), Northern Karelia, Murmansk Oblast, Russia
General Appearance of Type Material:
Grains, 5-50 microns.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 1139/1.
Geological Setting of Type Material:
Serpentinites. In polymineral phenocrysts composed primarily of heazlewoodite.
Associated Minerals at Type Locality:
GeversiteHeazlewooditeMagnetiteTučekite
Reference:
Rudashevskii N S, Men'shikov Y P, Lentsi A A, Shumskaya N I, Lobanova A B, Goncharov G N, Tutov A G (1982) Vozhminite, (Ni,Co)4(As,Sb)S2, a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 111, 480-485.

Synonyms of VozhminiteHide

Other Language Names for VozhminiteHide

German:Vozhminit
Spanish:Vozhminita

Related Minerals - Strunz-mindat GroupingHide

2.BB.ArsenotučekiteNi18Sb3AsS16Tet. 4mm : I4mm
2.BB.HrabákiteNi9PbSbS8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.'UM2007-27-S:CuFeIrNiRh'(Ni,Fe,Cu,Rh,Ir)11S9
2.BB.HoromaniteFe6Ni3S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.SamaniiteCu2Fe5Ni2S8Tet. 4/mmm(4/m2/m2/m) : P42/mnm
2.BB.05HeazlewooditeNi3S2Trig. 32 : R32
2.BB.05'UM2007-30-S:Fe'Fe3S2
2.BB.05OregoniteNi2FeAs2Hex.
2.BB.10HauchecorniteNi9BiSbS8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10ArsenohauchecorniteNi18Bi3AsS16Tet.
2.BB.10TellurohauchecorniteNi9Bi(Te,Bi)S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10JinxiuiteNi18Bi2SbAsS16Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.BB.10BismutohauchecorniteNi9Bi2S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10TučekiteNi9Sb2S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.15ArgentopentlanditeAg(Fe,Ni)8S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Shadlunite(Pb,Cd)(Fe,Cu)8S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Ferhodsite(Fe,Rh,Ni,Ir,Cu,Pt)9S8Tet.
2.BB.15CobaltpentlanditeCo9S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15'UM2002-26-S:FeNi'(Ni,Fe)9S8Hex.
2.BB.15Pentlandite(NixFey)Σ9S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15OberthüriteRh3Ni32S32Iso.
2.BB.15Geffroyite(Cu,Fe,Ag)9(Se,S)8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8Orth. mmm(2/m2/m2/m) : Pmmm
2.BB.15'Manganoshadlunite'(Mn,Pb,Cd)(Cu,Fe)8S8
2.BB.15SugakiiteCu(Fe,Ni)8S8Tet. 4/mmm(4/m2/m2/m) : P42/mnm
2.BB.15Godlevskite(Ni,Fe)9S8Orth. 222 : C222
2.BB.15WangyanitePdNi8S8Iso. m3m(4/m32/m) : Fd3c

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.

Internet Links for VozhminiteHide

References for VozhminiteHide

Localities for VozhminiteHide

Showing 1 localities.

This 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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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Murmansk Oblast
    • Northern Karelia
Rudashevskii N S et al. (1982) +2 other references
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