Fettelite Mineral Data + 
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- 3.2.6.1 Arcubisite Ag6CuBiS4 Ortho ? Ortho
- 3.2.6.2 Fettelite ! Ag24HgAs5S20 P 312, P 3m1 or P 3m1 Trig
- II/E.06-10 Stephanite Ag5SbS4 C mc21 mm2
- II/E.06-20 Selenostephanite Ag5Sb(Se,S)4 P 212121 2 2 2
- II/E.06-30 Arcubisite Ag6CuBiS4 Ortho ? Ortho
- II/E.06-40 Fettelite Ag24HgAs5S20 P 312, P 3m1 or P 3m1 Trig
General Fettelite Information |
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 Chemical Formula: |
Ag24HgAs5S20 | ||
| Composition: |
Molecular Weight = 3,805.35 gm | ||
| Silver 68.03 % Ag | |||
| Mercury 5.27 % Hg | |||
| Arsenic 9.84 % As | |||
| Sulfur 16.85 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Ag24HgAs5S20 | ||
| Environment: |
Hg-bearing species found in hydrothermal veins cutting basic intrusives of Variscan age. | ||
| IMA Status: |
Approved IMA 1996 (Dana # Added) | ||
| Locality: |
Nieder-Beerbach, Darmstadt, Odenwald, Germany. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for M. Fettel, an experienced mineral collector who found the mineral. | ||
| Synonym: |
IMA1994-056 | ||
Fettelite Image | |||
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Images:
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Fettelite Crystallography |
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| Axial Ratios: |
a:c = 1:1.03066 | ||
| Cell Dimensions: |
a = 15, c = 15.46, Z = 3; V = 3,012.47 Den(Calc)= 6.29 | ||
| Crystal System: |
TrigonalSpace Group: P 312, P 3m1 or P 3m1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.091(1)(005), 1.878(0.8)(440), 3.175(0.6)(401),2.998(0.4)(402), 2.755(0.3)(043), | ||
Physical Properties of Fettelite |
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| Cleavage: |
[0001] Perfect | ||
| Color: |
Dark violet, Scarlet red. | ||
| Density: |
6.29 | ||
| Diaphaniety: |
Subopaque to Opaque | ||
| Fracture: |
Brittle - Irregular - Very brittle fracture producing irregular fragments | ||
| Habit: |
Flakes - Flat, thin crystals or aggregates. | ||
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. | ||
| Habit: |
Micaceous - Platy texture with "flexible" plates. | ||
| Hardness: |
3.5-4 - Copper Penny-Fluorite | ||
| Luster: |
Adamantine - Metallic | ||
| Streak: |
vermilion | ||
Calculated Properties of Fettelite |
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| Electron Density: |
relectron=5.60 gm/cc |
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| Fermion Index |
Fermion Index = 0.01718 Boson Index = 0.98282 |
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| Photoelectric: |
PEFettelite = 266.24 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Fettelite is Not Radioactive |
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Fettelite Classification |
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| Dana Class: |
3.2.6.2 (3)Sulfides - Sulfosalts | ||
| (3.2)where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (3.2.6)Dana Group | |||
| Strunz Class: |
II/E.06-40 II - Sulfides and sulphosalts | ||
| II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Silver, x = 6.0 - 1.6 | |||
| II/E.06 - Stefanite - Arcusbisite series | |||
Other Fettelite Information |
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| References: |
PHYS. PROP.(Am.Min.,Vol.82,p621,1997) | ||
| See Also: |
Links to other databases for Fettelite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas Search for Fettelite using: Visit our Advertisers for Fettelite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 T G Fine Minerals Wrights Rock Shop Translate Fettelite Mineral Data : Ask about Fettelite here : Print or Cut-and-Paste your Fettelite Specimen Label here :
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