Dolomite

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Dolomite

Dolomite
General
Category Carbonate mineral
Chemical formula CaMg(CO3)2
Identification
Color white, gray to pink
Crystal habit tabular crystals, often with curved faces, also columnar, stalactitic, granular, massive.
Crystal system trigonal - rhombohedral, bar3
Twinning common as simple contact twins
Cleavage rhombohedral cleavage (3 planes)
Fracture brittle - conchoidal
Mohs scale hardness 3.5 to 4
Luster vitreous to pearly
Streak white
Specific 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 unless powdered.
Other characteristics May fluoresce white to pink under UV; triboluminescent.
References [1][2][3][4]
Dolomite from Morocco.
Dolomite.

Dolomite (pípè /ˈdɒləmaɪt/)


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Deer, W. A., R. A. Howie and J. Zussman (1966) An Introduction to the Rock Forming Minerals, Longman, pp. 489–493. ISBN 0-582-44210-9.
  2. http://rruff.geo.arizona.edu/doclib/hom/dolomite.pdf Handbook of Mineralogy
  3. http://webmineral.com/data/Dolomite.shtml Webmineral
  4. http://www.mindat.org/min-1304.html Mindat data