x 72 x 33 mm
appears to be calcite, has
'gardens' of (unknown to us) mineral inclusions, giving the
calcite a dark brownish colour. The specimen has bits of (?)duftite
and the matrix is rock of a composition
calcite has only a few very small to minute nicks.
on Mohs Scale: (calcite)
Tsumeb, Northern Namibia.
Code: NTS 040