Erniggliite Mineral Data + 
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Dan Weinrich Fine Minerals
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- 3.4.18.1 Erniggliite Tl2SnAs2S6 P 3 3
- II/E.12-10 Laffittite AgHgAsS3 Aa m
- II/E.12-20 Routhierite TlCu(Hg,Zn)2(As,Sb)2S3 I 4mm 4mm
- II/E.12-25 Stalderite TlCu(Zn,Fe,Hg)2As2S6 I 42m 4 2m
- II/E.12-30 Christite TlHgAsS3 P 21/n 2/m
- II/E.12-40 Ellisite Tl3AsS3 R 3m 3m
- II/E.12-45 Erniggliite Tl2SnAs2S6 P 3 3
- II/E.12-60 Wallisite PbTl(Cu,Ag)As2S5 P1 1
- II/E.12-70 Hatchite (Pb,Tl)2AgAs2S5 P1 or P1 1
- II/E.12-80 Sicherite! TlAg2(As,Sb)3S6 Pmnb 2/m 2/m 2/m
General Erniggliite Information |
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 Chemical Formula: |
Tl2SnAs2S6 | ||
| Composition: |
Molecular Weight = 869.72 gm | ||
| Thallium 47.00 % Tl | |||
| Tin 13.65 % Sn | |||
| Arsenic 17.23 % As | |||
| Sulfur 22.12 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Tl2SnAs2S6 | ||
| IMA Status: |
Approved IMA 1992 | ||
| Locality: |
Lengenbach, Binn, Switzerland. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in 1992 for Ernst Niggli (b.1917), Swiss mineralogist. | ||
| Synonym: |
ICSD 72907 | ||
| IMA1987-025 | |||
| PDF 45-1467 | |||
Search for Erniggliite Images | |||
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Images:
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Erniggliite Crystallography |
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| Axial Ratios: |
a:c = 1:1.07245 | ||
| Cell Dimensions: |
a = 6.68, c = 7.164, Z = 1; V = 276.85 Den(Calc)= 5.22 | ||
| Crystal System: |
Trigonal - RhombohedralH-M Symbol ( 3) Space Group: P 3 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.343(1), 3.029(0.63), 3.06(0.5), | ||
Physical Properties of Erniggliite |
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| Cleavage: |
[???] Perfect | ||
| Color: |
Gray, Black gray, Black. | ||
| Diaphaniety: |
Opaque | ||
| Hardness: |
2-3 - Gypsum-Calcite | ||
| Luster: |
Metallic | ||
| Streak: |
reddish black | ||
Calculated Properties of Erniggliite |
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| Electron Density: |
relectron=4.49 gm/cc |
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| Fermion Index |
Fermion Index = 0.02434 Boson Index = 0.97566 |
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| Photoelectric: |
PEErniggliite = 861.76 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Erniggliite is Not Radioactive |
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Erniggliite Classification |
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| Dana Class: |
3.4.18.1 (3)Sulfides - Sulfosalts | ||
| (3.4)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (3.4.18)Dana Group | |||
| Strunz Class: |
II/E.12-45 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.12 - Laffittite - Hatchite series | |||
Other Erniggliite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) | ||
| See Also: |
Links to other databases for Erniggliite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Erniggliite using: Visit our Advertisers for Erniggliite : Translate Erniggliite Mineral Data : Ask about Erniggliite here : Print or Cut-and-Paste your Erniggliite Specimen Label here :
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