Aktashite Mineral Data

Aktashite Mineral Data
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General Aktashite Information

Help on Chemical Formula: Chemical Formula: Cu6Hg3As4S12
Help on Composition: Composition: Molecular Weight = 1,667.52 gm
   Copper   22.86 %  Cu
   Mercury  36.09 %  Hg
   Arsenic  17.97 %  As
   Sulfur   23.08 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu6Hg3As4S12
Help on Environment: Environment: Hydrothermal deposits.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Gal-Kyaya deposit, Yakutia, and Aktash deposit, Altai Mts., Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Name Pronunciation: Name Pronunciation: Aktashite + Pronunciation Say AKTASHITE
Help on Synonym: Synonym: ICSD 20424
  PDF 25-298
 

Aktashite Image

Click Here for Larger Aktashite Image in a New Browser Window Images:
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Aktashite

Comments: Metallic gray grain of aktashite in quartz gangue.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Aktashite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.6793
Help on Cell Dimensions: Cell Dimensions: a = 13.72, c = 9.32, Z = 3; V = 1,519.34 Den(Calc)= 5.47
Help on Crystal System: Crystal System: Trigonal - PyramidalH-M Symbol (3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.12(1), 1.909(0.54), 1.627(0.4),
Click Here for Large Aktashite Structure Window Crystal Structure:

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

 

Physical Properties of Aktashite

Help on Cleavage: Cleavage: None
Help on Color: Color: Grayish black.
Help on Density: Density: 5.5
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Aktashite

Help on RL Anisotrophism: RL Anisotrophism: Weak in shades of blue.
Help on RL Color: RL Color: White.
 

Calculated Properties of Aktashite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.84 gm/cc
note: Specific Gravity of Aktashite =5.47 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEAktashite = 602.40 barns/electron
U=PEAktashite x rElectron Density=2,916.66 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aktashite is Not Radioactive
 

Aktashite Classification
Help on Dana Class: Dana Class: 03.04.13.02 (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.13)Dana Group
 
03.04.13.01 Nowackiite Cu6Zn3As4S12 R 3 3
 
03.04.13.02 Aktashite Cu6Hg3As4S12 R 3 3
 
03.04.13.03 Gruzdevite Cu6Hg3Sb4S12 R 3 3
Help on Strunz Class: Strunz Class: 02.GA.30 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GA -Neso-sulfarsenites, etc., without additional S
 
02.GA.30 Aktashite Cu6Hg3As4S12 R 3 3
 
02.GA.30 Gruzdevite Cu6Hg3Sb4S12 R 3 3
 
02.GA.30 Nowackiite Cu6Zn3As4S12 R 3 3
 

Other Aktashite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Aktashite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Aktashite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Aktashite Specimen Label here :

Aktashite

Cu6Hg3As4S12
Dana No: 03.04.13.02 Strunz No: 02.GA.30
Locality:

 

Notes: