Back to: Nature online

Earth lab datasite

Dolomite
Carbonate pearl spar
calcium magnesium carbonate
Ca Mg (CO3)2
Scale bar = 1 centimetre
cleavage: Perfect rhombohedral
crystal system: Trigonal
hardness 3.5 - 4.0
relative density 2.8 - 2.9
Alston moor, Cumberland
26 C 9