Manganoam Calcite and Goethite on Rock Matrix - SKMF 006


Manganoam calcite aggregates on goethite, on manganese, on rock matrix





Measurements:  67 x 59 x 27 mm

Description:  Cream coloured, botryoidal, manganoam calcite aggregates on reddish-brown to black goethite which, in turn, sits on a thin layer of mangenese and the latter, on rock matrix. 

The calcite has very little damage.

Weight of Specimen:  93.0 g

Chemical Composition:  CaCO3  (calcite)    
                                     α-FeO(OH)  (goethite) 

Hardness on Moh's Scale:   3  (calcite)
                                          5-5.5  (goethite) 

Location:  N'Chwaning 3, Kalahari Manganese Fields, Kuruman area, South Africa.

Specimen Code:  SKMF 006

US $ 120

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