Mineralogy Database

Diamond Mineral Data

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General Diamond Information

Help on Chemical  Formula: Chemical Formula: C
Help on Composition: Composition: Molecular Weight = 12.01 gm
   Carbon 100.00 %  C
          100.00 % 
Help on Empirical Formula: Empirical Formula: C
Help on Environment: Environment: Gas rich, ultra-basic diatremes from mantle depths (>30 km)and alluvial placer deposits derived from the Kimberlite rocks. Kimberlite = olivine, garnet, pyroxene, and calcite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) Prehistoric
Help on Locality: Locality: Kimberly, republic of South Africa. India. Brazil. Ural Mountains, Russia. Murfreesboro, Arkansas, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, adamas, meaning "invincible" or "hardest."
Help on Name Pronunciation: Name Pronunciation: Diamond Say DIAMOND
Help on Synonym: Synonym: Boart

Diamond Image

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Comments: Single octahedral crystal of diamond.
Location: Ghana, Africa. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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Comments: Translucent diamond penetration twin crystals.
Location: Mbuji-Mayi (Miba), Democratic Republic of the Congo (Zaire). Scale: 3.70 carats, 7x7x7 mm.
© John Betts - Fine Minerals

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Comments: Photomicrographs (PPL) of numerous microdiamonds in Kumdy-Kol caboniferous dolomite marble (Elements v1, no 2).
Location: Kokchetav Massif, Kumdy-Kol ultra high pressure facies area, northern Kazakhstan. Scale: See Image.
© Elements Magazine

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  Yimengite   Diamond

Comments: Birefringence image of diamond displaying the location of yimengite inclusions (1, 2 , 3, 4, and 5) along the different octahedral growth zones. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Diamond Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.5668, Z = 8; V = 45.38 Den(Calc)= 3.52
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): 2.06(1), 1.261(0.25), 1.0754(0.16),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Diamond

Help on Cleavage: Cleavage: {111} Perfect, {111} Perfect, {111} Perfect
Help on Color: Color: Colorless, White, Gray, Black, Blue.
Help on Density: Density: 3.5 - 3.53, Average = 3.51
Help on Diaphaneity: Diaphaneity: Transparent to Subtransparent to translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 10 - Diamond
Help on Luminescence: Luminescence: Fluorescent and phosphorescent blue, Short UV=blue, Long UV=blue.
Help on Luster: Luster: Adamantine
Help on Streak: Streak: colorless

Optical Properties of Diamond

Help on Optical Data: Optical Data: Isotropic, n=2.4175-2.4178.

Calculated Properties of Diamond

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.52 gm/cc
note: Specific Gravity of Diamond =3.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEDiamond = 0.16 barns/electron
U=PEDiamond x rElectron Density= 0.56 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Diamond is Not Radioactive

Diamond Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.03)with semi-metallic and non-metallic elements
  (01.03.06)Carbon Polymorph group Diamond C F d3m 4/m 3 2/m Graphite C P 63/mmc 6/m 2/m 2/m Lonsdaleite C P 63/mmc 6/m 2/m 2/m Chaoite C P 6/mmm 6/m 2/m 2/m Fullerite! C60 pseudo-CUBIC 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 01.CB.10a 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.10a Diamond C F d3m 4/m 3 2/m

Other Diamond Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Diamond :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - CalTech Mineral Spectroscopy
5 - GeoScienceWorld
6 - Glendale Community College
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - NSDL Reciprocal Net (JAVA)
16 - Online Mineral Museum
17 - Philatelic Mineralogy
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - Scandinavian mineral gallery
21 - Tradeshop.com - The Rainbow of Gems
22 - University of Texas at Austin

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Dana No: Strunz No: 01.CB.10a





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