Diamond Mineral Data

Diamond Mineral Data +

General Diamond Information

Chemical Formula:

Composition:

Molecular Weight = 12.01 gm

Carbon 100.00 % C

______

100.00 %

Empirical Formula:

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.

IMA Status:

Valid Species (Pre-IMA) Prehistoric

Locality:

Kimberly, republic of South Africa. India. Brazil. Ural Mountains, Russia. Murfreesboro, Arkansas, USA. Link to MinDat.org Location Data.

Name Origin:

From the Greek, adamas, meaning "invincible" or "hardest."

Synonym:

Boart

Booart

Carbonado

Diamond Image

Images:

Diamond

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

Images:

Diamond

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

Images:

Diamond

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

Diamond Crystallography

Cell Dimensions:

a = 3.5668, Z = 8; V = 45.38 Den(Calc)= 3.52

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.06(1), 1.261(0.25), 1.0754(0.16),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 1 1 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Wyckoff R W G , Crystal Structures , 1 (1963) p.7-83, Second edition. Interscience Publishers, New York, New York

Physical Properties of Diamond

Cleavage:

[111] Perfect, [111] Perfect, [111] Perfect

Color:

Colorless, White, Gray, Black, Blue.

Density:

3.5 - 3.53, Average = 3.51

Diaphaniety:

Transparent to Subtransparent to translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

10 - Diamond

Luminescence:

Fluorescent.

Luster:

Adamantine

Streak:

colorless

Optical Properties of Diamond

Optical Data:

Isotropic, n=2.4175-2.4178.

Calculated Properties of Diamond

Electron Density:

r_electron=3.52 gm/cc
note: r_Diamond=3.52 gm/cc.

Fermion Index

Fermion Index = 0.011
Boson Index = 0.989

Photoelectric:

PE_Diamond= 0.16 barns/electron
U=PE_Diamond x r_electron= 0.56 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Diamond is Not Radioactive

Diamond Classification

Dana Class:

1.3.6.1 (1)Native Elements

(1.3)with semi-metallic and non-metallic elements

(1.3.6)Carbon Polymorph group

1.3.6.1 Diamond C F d3m 4/m 3 2/m

1.3.6.2 Graphite C P 6₃/mmc 6/m 2/m 2/m

1.3.6.3 Lonsdaleite C P 6₃/mmc 6/m 2/m 2/m

1.3.6.4 Chaoite C P 6/mmm 6/m 2/m 2/m

1.3.6.5 Fullerite! C60 pseudo-CUBIC 4/m 2/m 2/m

Strunz Class:

I/B.02-40 I - Elements

I/B - Semimetals and nonmetals

I/B.02 - Carbon series, Graphite - Lonsdaleite

I/B.02-10 Graphite C P 6₃/mmc 6/m 2/m 2/m

I/B.02-20 Chaoite C P 6/mmm 6/m 2/m 2/m

I/B.02-30 Moissanite SiC P 6₃mc 6mm

I/B.02-40 Diamond C F d3m 4/m 3 2/m

I/B.02-50 Lonsdaleite C P 6₃/mmc 6/m 2/m 2/m

Other Diamond Information

References:

NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Search for Diamond using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Diamond :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Diamond Mineral Data :

Ask about Diamond here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Diamond Specimen Label here :

Diamond

C
Dana No: 1.3.6.1 Strunz No: I/B.02-40
Locality:

Notes: