Gillulyite Mineral Data + 
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- 3.8.9.1 Gillulyite Tl2(As,Sb)8S13 P 2/n 2/m
- II/E.14-10 Rebulite Tl5Sb5As8S22 P 21/c 2/m
- II/E.14-12 Jankovicite Tl5Sb9(As,Sb)4S22 P1 1
- II/E.14-15 Imhofite Tl6CuAs16S40 P 21/n 2/m
- II/E.14-20 Bernardite Tl(As,Sb)5S8 P 21/c 2/m
- II/E.14-25 Gillulyite Tl2(As,Sb)8S13 P 2/n 2/m
- II/E.14-30 Pierrotite Tl2Sb6As4S16 P na21 mm2
- II/E.14-40 Parapierrotite Tl(Sb,As)5S8 P 21/n 2/m
- II/E.14-50 Chabourneite (Tl,Pb)21(Sb,As)91S147 P1 1
General Gillulyite Information |
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 Chemical Formula: |
Tl2(As,Sb)8S13 | ||
| Composition: |
Molecular Weight = 1,518.65 gm | ||
| Thallium 26.92 % Tl | |||
| Antimony 16.03 % Sb | |||
| Arsenic 29.60 % As | |||
| Sulfur 27.45 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Tl2As6Sb2S13 | ||
| Environment: |
Found in vuggy masses of barite, in barite and calcite veins, and in the silty, carbonaceous limestone host. | ||
| IMA Status: |
Approved IMA 1991 | ||
| Locality: |
Mercury gold deposit, Tooele County, Utah, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in honor of the late James C. Gilluly, United States Geological Survey. | ||
| Synonym: |
ICSD 80119 | ||
| IMA1989-029 | |||
| PDF 46-1444 | |||
Gillulyite Image | |||
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Images:
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Gillulyite Crystallography |
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| Axial Ratios: |
a:b:c =1.6876:1:3.786 | ||
| Cell Dimensions: |
a = 9.584, b = 5.679, c = 21.501, Z = 2; beta = 100.07° V = 1,152.22 Den(Calc)= 4.38 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/n | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.814(1), 3.077(1), 3.63(0.9), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Gillulyite |
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| Cleavage: |
[???] Perfect | ||
| Color: |
Red, Maroon, Dark red, Blue. | ||
| Density: |
4.022 | ||
| Diaphaniety: |
Translucent | ||
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
| Hardness: |
2-2.5 - Gypsum-Finger Nail | ||
| Luster: |
Sub Metallic | ||
| Streak: |
red | ||
Optical Properties of Gillulyite |
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| Optical Data: |
Biaxial (?), b=2.81 | ||
Calculated Properties of Gillulyite |
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| Electron Density: |
relectron=3.86 gm/cc |
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| Fermion Index |
Fermion Index = 0.00205 Boson Index = 0.99795 |
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| Photoelectric: |
PEGillulyite = 525.41 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Gillulyite is Not Radioactive |
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Gillulyite Classification |
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| Dana Class: |
3.8.9.1 (3)Sulfides - Sulfosalts | ||
| (3.8)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (3.8.9)Dana Group | |||
| Strunz Class: |
II/E.14-25 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.14 - Rebulite - Chabourneite series | |||
Other Gillulyite Information |
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| References: |
PHYS. PROP.(Am.Min.,Vol.76,p653-656,1991) OPTIC PROP.(Am.Min.,Vol.76,p653-656,1991) | ||
| See Also: |
Links to other databases for Gillulyite : 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 - WWW-MINCRYST 13 -École des Mines de Paris Search for Gillulyite using: Visit our Advertisers for Gillulyite : Translate Gillulyite Mineral Data : Ask about Gillulyite here : Print or Cut-and-Paste your Gillulyite Specimen Label here :
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