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Aktashite

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Formula:
Cu6Hg3As4S12
System:
Trigonal
Colour:
Gray-black
Lustre:
Metallic
Hardness:
Name:
Named after its discovery locality in Russia.
Published without approbation, but recognize as valid species by the IMA CNMNC Sulfosalts Subcommittee (2008).
Isostructural with:
This page provides mineralogical data about Aktashite.


Classification of Aktashite

Approved
Notes:
Renamed by the IMA
Approval History:
Renamed by IMA: 2008
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

Occurrences of Aktashite

Type Occurrence of Aktashite

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.

Physical Properties of Aktashite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Gray-black
Comment:
white in reflected light
Streak:
black
Hardness (Mohs):
Hardness (Vickers):
VHN50=300 - 346 kg/mm2
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Conchoidal
Density:
5.5 g/cm3 (Measured)    5.72 g/cm3 (Calculated)

Crystallography of Aktashite

Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Cell Parameters:
a = 13.730(3) Å, c = 9.329(1) Å
Ratio:
a:c = 1 : 0.679
Unit Cell Volume:
V 1,523.02 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Rarely in crystals resembling trigonal pyramids, to 0.2 mm, which may be zoned with gruzdevite; as xenomorphic grains and granular aggregates.
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.04 (20)
3.10 (100)
2.69 (70)
1.903 (100)
1.621 (100)
1.554 (20)
1.345 (30)
1.236 (40)
1.204 (20)
Comments:
Gal-Khaya, Yakutia, Russia (ICDD 25-298).

Optical Data of Aktashite

Type:
Anisotropic
Anisotropism:
weak in shades of blue
Colour in reflected light:
White

Chemical Properties of Aktashite

Formula:
Cu6Hg3As4S12
Elements listed in formula:
Common Impurities:
Zn,Sb

Relationship of Aktashite to other Species

Series:
Forms a series with Gruzdevite (see here)
2.GA.05ProustiteAg3AsS3
2.GA.05PyrargyriteAg3SbS3
2.GA.10PyrostilpniteAg3SbS3
2.GA.10XanthoconiteAg3AsS3
2.GA.15SamsoniteAg4MnSb2S6
2.GA.20SkinneriteCu3SbS3
2.GA.20WitticheniteCu3BiS3
2.GA.25LapieiteCuNiSbS3
2.GA.25MückeiteCuNiBiS3
2.GA.25MalyshevitePdCuBiS3
2.GA.25LisiguangiteCuPtBiS3
2.GA.30GruzdeviteCu6Hg3Sb4S12
2.GA.30NowackiiteCu6Zn3As4S12
2.GA.35LaffittiteAgHgAsS3
2.GA.40RouthieriteCuTlHg2As2S6
2.GA.40StalderiteTlCu(Zn,Fe,Hg)2As2S6
2.GA.45ErniggliiteTl2SnAs2S6
2.GA.50BournoniteCuPbSbS3
2.GA.50SeligmanniteCuPbAsS3
2.GA.50SoučekiteCuPbBi(S,Se)3
5.4.1NowackiiteCu6Zn3As4S12
5.4.2FlorensoviteCu1+(Cr3+1.5Sb5+0.5)S4
5.4.4LaffittiteAgHgAsS3
5.4.5Galkhaite(Hg5Cu)CsAs4S12
5.4.6LivingstoniteHgSb4S8
5.4.7GruzdeviteCu6Hg3Sb4S12
5.4.8TvalchrelidzeiteHg3SbAsS3
5.4.9HakiteCu10Hg2Sb4Se13

Other Names for Aktashite

Name in Other Languages:
German:Aktashit
Simplified Chinese:硫砷汞铜矿
Spanish:Aktashita

Other Information

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 Aktashite

Reference List:
Vasil'ev, V.I. (1968) New ore minerals of the mercury deposits of Gornyi Altai and their parageneses. In: Voprosy metallogenii rtuti (Problems of mercury metallogeny). Izdatelstvo "Nauka" Moskva 1968, 111-129.

Fleischer, M. (1971) New mineral names. American Mineralogist: 56: 358-362.

Gruzdev, V.S., Chernitsova, N.M., Shumkova, N.G. (1972) Aktashite - Cu6Hg3As5S12, new data. Doklady Akademii Nauk SSSR: 206(3): 694-697.

Fleischer, M. (1973) New mineral names. American Mineralogist: 58: 560-562.

Kaplunik, L.N., Pobedimskaya, E.A., Belov, H.V. (1980) Kristallicheskaya struktura aktashimita Cu6Hg3As4S12. Doklady Akademii Nauk SSSR: 251(1): 96-98.

Nowacki, W. (1982): Isotypy in aktashite Cu6Hg3As4S12 and nowackiite Cu6Zn3As4S12. Soviet Physics - Crystallography 27, 26-27.

Vasil’ev, V.I., Pervukhina, N.V., Borisov, S.V., Magarill, S.A., Naumov, D.Y., 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: 656-661.

Internet Links for Aktashite

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Localities for Aktashite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Canada
 
  • British Columbia
    • Liard Mining Division
      • Iskut River
MINFILE NUMBER: 104B 008
  • Ontario
    • Thunder Bay District
      • Bomby Township
Mineralogical Magazine 1988 52 : 691-697; Powell, W. G., & Pattison, D. R. (1997). An exsolution origin for low-temperature sulfides at the Hemlo gold deposit, Ontario, Canada. Economic Geology, 92(5), 569-577.
Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49. p.86
Econ Geol (1997) 92:569-577; Powell, W. G., & Pattison, D. R. (1997). An exsolution origin for low-temperature sulfides at the Hemlo gold deposit, Ontario, Canada. Economic Geology, 92(5), 569-577.
China
 
  • Sichuan Province
    • Ngawa Autonomous Prefecture (Aba Autonomous Prefecture)
      • Jiuzhaigou Co. (Nanping Co.)
http://www.idm.gov.vn/Nguon_luc/Xuat_ban/2004/B23/b42.htm
France
 
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • La Chapelle-en-Valgaudemar (La Chapelle-en-Valgaudémar)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Johan, Z. & Mantienne, J. (2000): Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. J. Czech Geol. Soc. 45, 63-77.
Georgia
 
  • Racha-Lochkhumi-Kvemo Svaneti Region
    • Mestia-Racha District
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Iran
 
  • West Azarbaijan Province (West Azerbaijan Province)
    • Takab (Takan Tepe)
Asadi, H.H., Voncken, J.H.L, Kühnel, R.A., and Hale, M. (2000): Mineralium Deposita 35, 656-671.
Italy
 
  • Tuscany
    • Lucca Province
      • Apuan Alps
        • Stazzema
          • Sant'Anna di Stazzema
Biagioni, C., Bonaccorsi, E., Moëlo, Y., Orlandi, P. (2014): Mercury-arsenic sulfosalts from Apuan Alps (Tuscany, Italy). II. Aktashite, Cu6Hg3As4S12, and laffittite, AgHgAsS3, from the Monte Arsiccio mine: occurrence and crystal structure. Periodico di Mineralogia, 83, 1-18.; Biagioni, C., Bonaccorsi, E., Moëlo, Y., & Orlandi, P. (2014). Mercury-arsenic sulfosalts from Apuan Alps (Tuscany, Italy). I. Routhierite,(Cu0. 8Ag0. 2) Hg2Tl (As1. 4Sb0. 6)∑= 2S6, from Monte Arsiccio mine: occurrence and crystal structure. European Journal of Mineralogy, 26(1), 163-170.
Kyrgyzstan
 
  • Osh Oblast
    • Alai Range (Alay Range)
[Lapis 1993:11 p11-24]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Spiridonov, E. M., KRAPIVA, L., Stepanov, V. I., & Chvileva, T. N. (1981). Antimonous Aktashite from the Chauvai Mercury Deposit (Central Asia). Doklady Akademii Nauk SSSR, 261(3), 744-748.
      • Fergana Valley
[Lapis 11:11-24]; 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
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Bryzgalov, I. A., Shcherbachev, D. K., & Konyshev, V. O. (1999). Aktashite in Ores from the Kyuchus Gold-Mercury Deposit, Northeastern Yakutia. In Doklady earth sciences (Vol. 365, pp. 272-275). Springer.
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Berezovskii (Berezovskii Zavod)
Vikent'eva, O., & Vikentev, I. (2016, April). Occurrence modes of As, Sb, Te, Bi, Ag in sulfide assemblages of gold deposits of the Urals. In IOP Conference Series: Materials Science and Engineering (Vol. 123, No. 1, p. 012028). IOP Publishing.
        • Krasnotur'insk (Bogolovsk; Krasnoturjinsk; Krasnoturyinsk)
          • Turya river
            • Tur'insk
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; American Mineralogist, 82, 620-624; Vikent'eva, O., & Vikentev, I. (2016, April). Occurrence modes of As, Sb, Te, Bi, Ag in sulfide assemblages of gold deposits of the Urals. In IOP Conference Series: Materials Science and Engineering (Vol. 123, No. 1, p. 012028). IOP Publishing.
  • Western-Siberian Region
    • Altai Republic (Gorno-Altayskaya Autonomous Oblast')
[Clark, 1993 - "Hey's Mineral Index, 3rd Edition"]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; V. I. Vasil’ev, N. V. Pervukhina, S. V. Borisov, S. A. Magarill, D. Yu. Naumov and N. V. Kurat’eva (2010): Aktashite Cu6Hg3As4S12 from the Aktash deposit, Altai, Russia: Refinement and crystal chemical analysis of the structure. Geology of Ore Deposits 52, 656-661.
Spain
 
  • Castile and Leon
    • León
      • Maraña
        • Puerto de las Señales
Martín-Izard, A., Gumiel, P., Arias, M., Cepedal, A., Fuertes-Fuente, M., & Reguilón, R. (2009). Genesis and evolution of the structurally controlled vein mineralization (Sb–Hg) in the Escarlati deposit (León, Spain): Evidence from fault population analysis methods, fluid-inclusion research and stable isotope data. Journal of Geochemical Exploration, 100(1), 51-66.
USA
 
  • Nevada
    • Eureka Co.
      • Lynn District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Humboldt Co.
      • Osgood Mts
        • Potosi District
          • Adam Peak
NBMG Spec. Pub. 31 Minerals of Nevada
    • Lander Co.
      • Cortez District
Clark, L. R. (2012). Ore and gangue mineral paragenesis of the Cortez Hills Carlin-type gold deposit, Nevada: evidence for coincident high-grade gold deposition and collapse brecciation. MS Thesis, University of Nevada
Mineral and/or Locality  
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