Calcite on GoethiteSKMF 025


Yellowish / white, botryoidal, manganoam calcite on botryoidal, blackish goethite



Measurements:  96 x 53 x 20 mm

Description:   Yellowish / white, botryoidal, manganoam calcite on botryoidal, blackish goethite with bits of manganite and iron ore.

The calcite has damage, visible on the photographs.

We have it from a reliable source that about 90% of manganoam calcite fluoresces.  Hoever, we do not have the facilities to test specimens ourselves.

Weight of Specimen:  116.9 g

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

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

Location:  N'Chwaning, Kalahari Manganese Fields, Kuruman Area, South Africa

Specimen Code:  SKMF 025

US $ 80



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