| |
 |
Aktashite Mineral Data
|
|
|
General Aktashite Information
|
 Chemical Formula: |
Cu6Hg3As4S12 |
| 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 % |
| Empirical Formula: |
Cu6Hg3As4S12 |
| Environment: |
Hydrothermal deposits. |
| IMA Status: |
Approved IMA 1968 |
| Locality: |
Gal-Kyaya deposit, Yakutia, and Aktash deposit, Altai Mts., Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the locality. |
| Name Pronunciation: |
Aktashite + Pronunciation  |
| Synonym: |
ICSD 20424 |
| |
PDF 25-298 |
| |
Aktashite Image |
|
Images:
|
|
Aktashite Crystallography
|
| Axial Ratios: |
a:c = 1:0.6793 |
| Cell Dimensions: |
a = 13.72, c = 9.32, Z = 3; V = 1,519.34 Den(Calc)= 5.47 |
| Crystal System: |
Trigonal - Pyramidal H-M Symbol (3) Space Group: R 3 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.12(1), 1.909(0.54), 1.627(0.4), |
| |
Physical Properties of Aktashite
|
| Cleavage: |
None |
| Color: |
Grayish black. |
| Density: |
5.5 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
| Streak: |
black |
| |
Optical Properties of Aktashite
|
| RL Anisotrophism: |
Weak in shades of blue. |
| RL Color: |
White. |
| |
Calculated Properties of Aktashite
|
| Electron Density: |
Bulk Density (Electron Density)=4.84 gm/cc
note: Specific Gravity of Aktashite =5.47 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.11
Boson Index = 0.89 |
| Photoelectric: |
PEAktashite = 602.40 barns/electron
U=PEAktashite x rElectron Density=2,916.66 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aktashite is Not Radioactive |
| |
Aktashite Classification
|
| 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 |
| 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
|
| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
| 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
Search for Aktashite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Aktashite :
Ask about Aktashite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
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:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.
