Dolomite | |
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![]() Dolomite and magnesite – Spain | |
General | |
Category | Carbonate mineral |
Formula (repeatin unit) | (CaMg)(CO3)2 |
Strunz clessification | 05.AB.10 |
Creestal seestem | Trigonal |
Space group | Trigonal rhombohedral, 3 |
Unit cell | a = 4.8012(1) Å, c = 16.002 Å; Z = 3 |
Identification | |
Colour | White, gray tae pink |
Creestal habit | Tabular crystals, aften wi curved faces, columnar, stalactitic, granular, massive. |
Twinnin | Common as simple contact twins |
Cleavage | Perfect on {1011}, rhombohedral cleavage |
Fractur | Conchoidal |
Tenacity | Brickle |
Mohs scale haurdness | 3.5 tae 4 |
Skinkle | Vitreous tae pearly |
Streak | White |
Speceefic gravity | 2.84–2.86 |
Optical properties | Uniaxial (-) |
Refractive index | nω = 1.679–1.681 nε = 1.500 |
Birefringence | δ = 0.179–0.181 |
Solubility | Poorly soluble in dilute HCl |
Ither chairacteristics | Mey fluoresce white tae pink unner UV; triboluminescent. |
References | [1][2][3][4] |
Dolomite /ˈdɒləmaɪt/ is a carbonate mineral componed o calcium magnesium carbonate CaMg(CO3)2. The wird dolomite is forbye uised for tae describe the sedimentary carbonate rock, that is componed predominantly o the mineral dolomite (itherwise kent as dolostone).