Olmiite and Calcite on Matrix - SKMF 008

Measurements:  56 x 48 x 20 mm

Description:  Drusy aggregates of olmiite crystals with a camel colour and bits of calcite, sit on a small (?)rock matrix (image bottom right shows bottom of specimen). 

Except for a few small nicks, the damage is confined to the edgees of the specimen.

Weight of Specimen:  53.6 g

Chemical Composition:  CaMn[SiO₃(OH)](OH)  (olmiite)                                                                                        CaCO₃  (calcite)

Hardness on Mohs Scale:  (olmiite)  5-5.5
                                          (calcite)  3

Location:  N'Chwaning 2 mine, Kalahari Manganese Fields, Kuruman area, Northern Cape, South Africa.

Specimen Code:  SKMF 008