Aktashite (original) (raw)

A valid IMA mineral species

About AktashiteHide

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Name:

Named after its discovery locality in Russia.

Published without approbation, but recognized as valid species by the IMA CNMNC Sulfosalts Subcommittee (2008).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:74:7

2eabce0c-c12c-49ca-bf3b-b9c3ca72848d

IMA Classification of AktashiteHide

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IMA status notes:

Renamed by the IMA

Approval history:

Renamed by IMA: 2008

Classification of AktashiteHide

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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

3.4.13.2

3 : SULFOSALTS
4 : ø = 3

5.4.3

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

Mineral SymbolsHide

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

Physical Properties of AktashiteHide

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Hardness:

VHN50=300 - 346 kg/mm2 - Vickers

Fracture:

Irregular/Uneven, Conchoidal

Density:

5.5 g/cm3 (Measured) 5.72 g/cm3 (Calculated)

Optical Data of AktashiteHide

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Anisotropism:

Weak, in shades of blue

Reflectivity:

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 30.8%.

Colour in reflected light:

White

Chemistry of AktashiteHide

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Mindat Formula:

Cu6Hg3As4S12

Crystallography of AktashiteHide

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Class (H-M):

3 - Pyramidal

Cell Parameters:

a = 13.730(3) Å, c = 9.329(1) Å

Unit Cell V:

1,523.02 ų (Calculated from Unit Cell)

Morphology:

Rarely in crystals resembling trigonal pyramids, to 0.2 mm, which may be zoned with gruzdevite; as xenomorphic grains and granular aggregates.

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Gal-Khaya, Yakutia, Russia (ICDD 25-298).

Geological EnvironmentHide

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Geological Setting:

Hydrothermal veins

Type Occurrence of AktashiteHide

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General Appearance of Type Material:

Small (0.01-0.2 mm) euhedral crystals and granular aggregates.

Place of Conservation of Type Material:

Central Siberian Geological Museum, Novosibirsk, Russia, III-14/1; National School of Mines, Paris, France.

Geological Setting of Type Material:

Uncommon, of hydrothermal origin in complex polymetallic As–Hg-bearing deposits.

Associated Minerals at Type Locality:

Other Language Names for AktashiteHide

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Relationship of Aktashite to other SpeciesHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of AktashiteHide

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Other InformationHide

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Notes:

Soluble in alkalis, H2SO4, HCl, and HF.

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 AktashiteHide

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References for AktashiteHide

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Reference List:

Vasil’ev, V. I., Pervukhina, N. V., Borisov, S. V., Magarill, S. A., Naumov, D. Yu., Kurat’eva, N. V. (2010) Aktashite Cu6Hg3As4S12 from the Aktash deposit, Altai, Russia: Refinement and crystal chemical analysis of the structure. Geology of Ore Deposits, 52 (7) 656-661 doi:10.1134/s1075701510070184

Localities for AktashiteHide

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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.

Locality ListHide

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- 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.