Troilite Mineral Data + 
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- 2.8.9.1 Troilite FeS P 63/mmc 6/m 2/m 2/m
- II/C.19-10 Troilite FeS P 63/mmc 6/m 2/m 2/m
- II/C.19-20 Pyrrhotite Fe(1-x)S(x=0-0.17) A2/a 2/m
- II/C.19-25 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m
- II/C.19-30 Westerveldite (Fe,Ni,Co)As Pnam 2/m 2/m 2/m
- II/C.19-40 Modderite (Co,Fe)As Pmcn 2/m 2/m 2/m
- II/C.19-50 Smythite (Fe,Ni)9S11or(Fe,Ni)13S16 R 3m 3 2/m
- II/C.19-60 Achavalite* FeSe P 63/mmc 6/m 2/m 2/m
- II/C.19-70 Heideite (Fe,Cr)1x(Ti,Fe)2S4 I2/m 2/m
General Troilite Information |
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 Chemical Formula: |
FeS | ||
| Composition: |
Molecular Weight = 87.91 gm | ||
| Iron 63.53 % Fe | |||
| Sulfur 36.47 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Fe2+S | ||
| Environment: |
Found in serpentinites, in layered ultramafic intrusives, and as nodules in meteorites. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1863 | ||
| Locality: |
Albareto meteorite, Albareto, Modena, Emilia-Romagna, Italy. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Dominico Troili, who described, in 1766, a meteorite which fell in Albareto, near Modena, Italy. | ||
Troilite Image | |||
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Troilite Crystallography |
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| Axial Ratios: |
a:c = 1:1.66917 | ||
| Cell Dimensions: |
a = 3.452, c = 5.762, Z = 2; V = 59.46 Den(Calc)= 4.91 | ||
| Crystal System: |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.09(1), 2.66(0.6), 1.72(0.5), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Troilite |
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| Cleavage: |
None | ||
| Color: |
Bronze brown, Gray brown. | ||
| Density: |
4.58 - 4.65, Average = 4.61 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. | ||
| Habit: |
Platy - Sheet forms (e.g. micas). | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
3.5-4 - Copper Penny-Fluorite | ||
| Luminescence: |
None. | ||
| Luster: |
Metallic | ||
| Magnetism: |
Strongly magnetic | ||
| Streak: |
gray black | ||
Optical Properties of Troilite |
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| RL Anisotrophism: |
Strong. | ||
Calculated Properties of Troilite |
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| Electron Density: |
relectron=4.69 gm/cc |
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| Fermion Index |
Fermion Index = 0.0162 Boson Index = 0.9838 |
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| Photoelectric: |
PETroilite = 21.27 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Troilite is Not Radioactive |
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Troilite Classification |
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| Dana Class: |
2.8.9.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.8)where Am Bn Xp, with (m+n):p=1:1 | |||
| (2.8.9)Dana Group | |||
| Strunz Class: |
II/C.19-10 II - Sulfides and sulphosalts | ||
| II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1 | |||
| II/C.19 - Troilite - Pyrrhotite - Haideite series | |||
Other Troilite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Troilite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 - Minerals of Wisconsin 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Troilite using: Visit our Advertisers for Troilite : Translate Troilite Mineral Data : Ask about Troilite here : Print or Cut-and-Paste your Troilite Specimen Label here :
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