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Earth lab datasite

Pyroxene
Silicate rhodonite
manganese iron calcium silicate
(Mn Fe Ca) Si O3
Scale bar = 1 centimetre
cleavage: 3 directions: (parallel) 2 perfect, 1 good
crystal system: Triclinic
hardness 5.5 - 6.5
relative density 3.5 - 3.7
Black down, near Tavistock, Devon
25 K 8