Fangite Mineral Data + 
|
We specialise in top quality, fine minerals from Morocco, Namibia,
South Africa, Pakistan, Democratic Republic of Congo (Za�¯re) and China
Worldwide Fine Minerals by B & C GOBIN
- 3.2.9.1 Fangite Tl3AsS4 P nma 2/m 2/m 2/m
- II/E.10-10 Fangite Tl3AsS4 P nma 2/m 2/m 2/m
General Fangite Information |
|||
 Chemical Formula: |
Tl3AsS4 | ||
| Composition: |
Molecular Weight = 816.34 gm | ||
| Thallium 75.11 % Tl | |||
| Arsenic 9.18 % As | |||
| Sulfur 15.71 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Tl3AsS4 | ||
| Environment: |
Found in vugs with pyrite an other sulfide material of complex composition. | ||
| IMA Status: |
Approved IMA 1993 | ||
| Locality: |
Mercury gold deposit in the southern Oquirrh Mountains of Tooele County, Utah, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Fangite was named for Jen-Ho Fang in honor of his numerous contributions to crystallography, crystal chemistry, and geostatistics. | ||
| Synonym: |
ICSD 74007 | ||
| IMA1991-047 | |||
| PDF 46-1402 | |||
Fangite Image | |||
|
Images:
|
|
||
Fangite Crystallography |
|||
| Axial Ratios: |
a:b:c =0.8193:1:0.8363 | ||
| Cell Dimensions: |
a = 8.894, b = 10.855, c = 9.079, Z = 4; V = 876.53 Den(Calc)= 6.19 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.536(1), 2.714(0.87), 3.361(0.71), | ||
|
Crystal Structure:
Mouse |
| ||
Physical Properties of Fangite |
|||
| Cleavage: |
[???] Indistinct | ||
| Color: |
Deep dark brown, Red. | ||
| Density: |
6.185 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | ||
| Hardness: |
2-2.5 - Gypsum-Finger Nail | ||
| Luster: |
Sub Metallic | ||
| Streak: |
orange | ||
Optical Properties of Fangite |
|||
| Optical Data: |
Biaxial (?), b=2.78-2.81 | ||
Calculated Properties of Fangite |
|||
| Electron Density: |
relectron=5.16 gm/cc |
||
| Fermion Index |
Fermion Index = 0.00117 Boson Index = 0.99883 |
||
| Photoelectric: |
PEFangite =1,334.34 barns/electron |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Fangite is Not Radioactive |
||
Fangite Classification |
|||
| Dana Class: |
3.2.9.1 (3)Sulfides - Sulfosalts | ||
| (3.2)where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (3.2.9)Dana Group | |||
| Strunz Class: |
II/E.10-10 II - Sulfides and sulphosalts | ||
| II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Thallium and Mercury, x = 4.0 - 1.6 | |||
| II/E.10 - Fangite series | |||
Other Fangite Information |
|||
| References: |
PHYS. PROP.(Am.Min.,Vol.78,p1096-1103,1993) OPTIC PROP.(Am.Min.,Vol.78,p1096-1103,1993) | ||
| See Also: |
Links to other databases for Fangite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Fangite using: Visit our Advertisers for Fangite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Fangite Mineral Data : Ask about Fangite here : Print or Cut-and-Paste your Fangite Specimen Label here :
|
||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |