Whewellite on matrix, heart twin xl 6x5 mm, very sharp all around ,white in color with a silky sheen from the classic and old locality for which this specie it is most famous.
Formula :
Ca[C2O4] * H2O
System: monoclinic Hardness:2½-3 Rarity:rare
Strunz id:IX/A.1-10 -
ORGANIC COMPOUNDS
Name origin: Named after William Whewell (1794-1866), English naturalist and scientist, Professor of Moral Philosophy and inventor of the system of crystallographic indexing.
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 Specimen weight:18 gr.
 Crystal size:6x5 mm
 Overall size: 37mm x 20 mm x 18 mm
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