Mineralogy Database

Silicon Mineral Data

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General Silicon Information

Help on Chemical  Formula: Chemical Formula: Si
Help on Composition: Composition: Molecular Weight = 28.09 gm
   Silicon 100.00 %  Si
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Si
Help on Environment: Environment: Volcanic exhalations and minor inclusions in gold and other mantle-derived rocks. High purity synthetic material used in semiconductor manufacture.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Tolbachik, Kamchatka. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Latin, silicis = "flint."
Help on Name Pronunciation: Name Pronunciation: Silicon Say SILICON
Help on Synonym: Synonym: ICSD 60385
  PDF 27-1402
  Silicium
 

Silicon Image

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  Silicon   Moissanite

Comments: Backscattered electron image of metallic inclusion in moissanite (SiC). The gray shading in the BSE mage consists mainly of pure silicon (Si metal). The brighter areas are composed of Fe-silicide. (AmMin, 88:1818).
Location: Found in a cobble at a beach along the Turkish coast of the Mediterranean Sea, around 150 km NW from Izmir, and is most likely derived from Tertiary volcanic rocks outcropping in the area. Scale: Scalebar 200 µ-m.
© American Mineralogist

Silicon Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 5.431, Z = 8; V = 160.19 Den(Calc)= 2.33
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.134(1), 1.917(0.5), 1.644(0.1),
 

Physical Properties of Silicon

Help on Cleavage: Cleavage: None
Help on Color: Color: Iron black, Reddish brown.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Calculated Properties of Silicon

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.32 gm/cc
note: Specific Gravity of Silicon =2.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PESilicon = 3.34 barns/electron
U=PESilicon x rElectron Density= 7.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Silicon is Not Radioactive
 

Silicon Classification

Help on  Dana Class: Dana Class: 01.03.07.01 (01)Native Elements
  (01.03)with semi-metallic and non-metallic elements
  (01.03.07)Dana Group
 
01.03.07.01 Silicon Si F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.CB.15 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.C - Metalloids and Nonmetals
  01.CB -Carbon-silicon family
 
01.CB.15 Silicon Si F d3m 4/m 3 2/m
 

Other Silicon Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Silicon :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Silicon

Si
Dana No: 01.03.07.01 Strunz No: 01.CB.15
Locality:

 

Notes:

 

 
   
 


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