Mineralogy Database

Lechatelierite Mineral Data

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General Lechatelierite Information

Help on Chemical  Formula: Chemical Formula: SiO2
Help on Composition: Composition: Molecular Weight = 60.08 gm
   Silicon  46.74 %  Si  100.00 % SiO2
   Oxygen   53.26 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (SiO2)
Help on Environment: Environment: Naturally occurring fused quartz as inclusions in igneous rock, lightning strikes in sandy soils, and meteor impacts.
Help on IMA Status: IMA Status: Not Submitted IMA - Published 1915
Help on Locality: Locality: Meteor Crater, Coconino County, Arizona, USA and other World wide occurrences. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henry Louis Le Chatelier (1850-1936), French-Italian chemist.
Help on Synonym: Synonym: Fulgurites
 

Lechatelierite Image

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  Lechatelierite   Trinitite

Comments: Fused silica sand (trinitite) generated by the first nuclear (fission) bomb. Although man-made and not a valid mineral, the specimen has historic value.
Location: Trinity Flats, White Sands, New Mexico. It came into existance at 5:29 a.m., July 16, 1945. Scale: Specimen size 4.1 cm.
© Paul M. Schumacher

Lechatelierite Crystallography

Help on Crystal System: Crystal System: Amorphous- No Crystals
 

Physical Properties of Lechatelierite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.5 - 2.65, Average = 2.57
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Porcelainous - Fine-grained, translucent massive material like broken china
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Lechatelierite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.066 (Fair) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1942,KC= 0.208
Ncalc = 1.52 - 1.55
Help on Optical Data: Optical Data: Isotropic, n=1.5.
 

Calculated Properties of Lechatelierite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Lechatelierite =2.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PELechatelierite = 1.80 barns/electron
U=PELechatelierite x rElectron Density= 4.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lechatelierite is Not Radioactive
 

Lechatelierite Classification

Help on  Dana Class: Dana Class: 75.00.00.00 (75)Tektosilicate Minerals
  (75.00)Without Dana Classification Numbers
  (75.00.00)Silica Group
 
75.00.00.00 Alflarsenite NaCa2Be3Si4O13(OH)•2H2O P 21 2
 
75.00.00.00 Florkeite (K3Ca2Na)[Al8Si8O32]•12H2O P1 1
 
75.00.00.00 Lechatelierite* SiO2 None
Help on  Strunz Class: Strunz Class: 04.DA.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DA -With small cations
 
04.DA.30 Lechatelierite* SiO2 None
 

Other Lechatelierite Information

Help on References: References: NAME( Bull. Soc. Fran, de Min., vol. 38, pp. 182-186 (1915)) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lechatelierite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Lechatelierite

SiO2
Dana No: 75.00.00.00 Strunz No: 04.DA.30
Locality:

 

Notes:

 

 
   
 


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