Mineralogy Database

Dolomite Mineral Data

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General Dolomite Information

Help on Chemical Formula: Chemical Formula: CaMg(CO3)2
Help on Composition: Composition: Molecular Weight = 184.40 gm
   Calcium    21.73 %  Ca   30.41 % CaO
   Magnesium  13.18 %  Mg   21.86 % MgO
   Carbon     13.03 %  C    47.73 % CO2
   Oxygen     52.06 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMg(CO3)2
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1791
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the French mineralogist and geologist, Deodat Guy Tancrede Gratet de Dolomieu (1750-1801).
Help on Name Pronunciation: Name Pronunciation: Dolomite Say DOLOMITE
Help on Synonym: Synonym: ICSD 31336
  PDF 36-426
 

Dolomite Image

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  Dolomite

Comments: Pink rhombohedral crystals of dolomite on matrix.
Location: Eugui, Navarra Province, Navarra, Spain. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
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  Dissakisite-(Ce)   Dolomite

Comments: Small, prisimatic, acicular crystals of tan-colored dissakisite-(Ce) scatterd on white crystalline dolomite.
Location: Trimouns mine, Luzenac, Ariège France. Scale: Picture size 5 cm.
© Fabre Minerals

Dolomite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:3.29409
Help on Cell Dimensions: Cell Dimensions: a = 4.842, c = 15.95, Z = 3; V = 323.85 Den(Calc)= 2.84
Help on Crystal System: Crystal System: Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.883(1), 1.785(0.6), 2.191(0.5),
Help on Forms: Forms:

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Help on Above

Forms: ( 1 0 1)

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Physical Properties of Dolomite

Help on Cleavage: Cleavage: {1011} Perfect, {1011} Perfect, {1011} Perfect
Help on Color: Color: White, Gray, Reddish white, Brownish white, Gray.
Help on Density: Density: 2.8 - 2.9, Average = 2.84
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Blocky - Rhombohedral - Crystal shape resembles rhomohedrons.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Dolomite

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2077,KPDmeas= 0.207,KC= 0.2083
Ncalc = 1.58 - 1.6
Help on Optical Data: Optical Data: Uniaxial (-), e=1.5, w=1.679-1.681, bire=0.1790-0.1810.
 

Calculated Properties of Dolomite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Dolomite =2.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEDolomite = 3.13 barns/electron
U=PEDolomite x rElectron Density= 8.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dolomite is Not Radioactive
 

Dolomite Classification
Help on Dana Class: Dana Class: 14.02.01.01 (14)Anhydrous Carbonates
  (14.02)with Compound Formula A+ B++ (CO3)2
  (14.02.01)Dolomite Group (Trigonal: R-3)
 
14.02.01.01 Dolomite CaMg(CO3)2 R 3 3
 
14.02.01.02 Ankerite Ca(Fe,Mg,Mn)(CO3)2 R 3 3
 
14.02.01.03 Kutnohorite Ca(Mn,Mg,Fe)(CO3)2 R 3 3
 
14.02.01.04 Minrecordite CaZn(CO3)2 R 3 3
Help on Strunz Class: Strunz Class: 05.AB.10 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AB -Alkali-earth (and other M2+) carbonates
 
05.AB.10 Ankerite Ca(Fe,Mg,Mn)(CO3)2 R 3 3
 
05.AB.10 Dolomite CaMg(CO3)2 R 3 3
 
05.AB.10 Kutnohorite Ca(Mn,Mg,Fe)(CO3)2 R 3 3
 
05.AB.10 Minrecordite CaZn(CO3)2 R 3 3
 

Other Dolomite Information
Help on References: References: NAME( ODonoghue90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Dolomite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - Franklin Minerals(Palache)
10 - GeoScienceWorld
11 - Glendale Community College
12 - Google Images
13 - Google Scholar
14 - Handbook of Mineralogy (MinSocAm)
15 - Handbook of Mineralogy (UofA)
16 - HyperPhysics
17 - MinDAT
18 - Mineral and Gemstone Kingdom
19 - Mineralienatlas (Deutsch)
20 - Minerals in Thin Sections-Humboldt State
21 - NSDL Reciprocal Net (JAVA)
22 - Online Mineral Museum
23 - Philatelic Mineralogy
24 - QUT Mineral Atlas
25 - Ruff.Info
26 - Scandinavian mineral gallery
27 - University of Colorado - Mineral Structure Data
28 - WWW-MINCRYST
29 - YupRocks

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

Dolomite

CaMg(CO3)2
Dana No: 14.02.01.01 Strunz No: 05.AB.10
Locality:

 

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