| Lechatelierite Mineral Data |
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- IV/D.01-10 Quartz SiO2 P 3121,P 3221 3 2
- IV/D.01-20 Tridymite SiO2 F1 1
- IV/D.01-30 Cristobalite SiO2 P 41212 4 2 2
- IV/D.01-35 Moganite! SiO2 I2/a 2/m
- IV/D.01-40 Melanophlogite SiO2·n(C,H,O,S) P 41/nbc 4/m 2/m 2/m
- IV/D.01-40* Melanophlogite-beta! SiO2·n(C,H,O,S) P m3n 4/m 3 2/m
- IV/D.01-50 Coesite SiO2 C 2/c 2/m
- IV/D.01-60 Stishovite SiO2 P 4/mnm 4/m 2/m 2/m
- IV/D.01-70 Lechatelierite SiO2 None
- IV/D.01-80 Opal SiO2·n(H2O) None
General Lechatelierite Information |
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 Chemical Formula: |
SiO2 | ||
| Composition: |
Molecular Weight = 60.08 gm | ||
| Silicon 46.74 % Si 100.00 % SiO2 | |||
| Oxygen 53.26 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
(SiO2) | ||
| Environment: |
Naturally occurring fused quartz as inclusions in igneous rock, lightning strikes in sandy soils, and meteor impacts. | ||
| IMA Status: |
Not Approved IMA | ||
| Locality: |
World wide occurrences. Link to MinDat.org Location Data. | ||
| Synonym: |
Fulgurites | ||
Lechatelierite Image | |||
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Images:
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Lechatelierite Crystallography |
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| Crystal System: |
Amorphous- No Crystals | ||
Physical Properties of Lechatelierite |
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| Cleavage: |
None | ||
| Color: |
Colorless, White. | ||
| Density: |
2.5 - 2.65, Average = 2.57 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | ||
| Habit: |
Porcelainous - Fine-grained, translucent massive material like broken china | ||
| Hardness: |
6.5 - Pyrite | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Lechatelierite |
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| Gladstone-Dale: |
CI meas= 0.066 (Fair) - where the CI = (1-KPDmeas/KC) KPDmeas= 0.1942,KC= 0.208 |
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| Optical Data: |
Isotropic, n=1.5. | ||
Calculated Properties of Lechatelierite |
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| Electron Density: |
relectron=2.57 gm/cc |
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| Fermion Index |
Fermion Index = 0.02208 Boson Index = 0.97792 |
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| Photoelectric: |
PELechatelierite = 1.80 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lechatelierite is Not Radioactive |
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Lechatelierite Classification |
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| Dana Class: |
75.0.0.0 (75)Tektosilicate Minerals | ||
| (75.0)Without Dana Classification Numbers | |||
| (Silica Group) | |||
| Strunz Class: |
IV/D.01-70 IV - Oxides | ||
| IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) | |||
| IV/D.01 - Quartz group | |||
Other Lechatelierite Information |
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| References: |
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Lechatelierite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 - Mineral and Gemstone Kingdom 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris Search for Lechatelierite using: Visit our Advertisers for Lechatelierite : Translate Lechatelierite Mineral Data : Ask about Lechatelierite here : Print or Cut-and-Paste your Lechatelierite Specimen Label here :
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