Quartz Crystals on ManganiteSKMF 022

Quartz Crystals on Manganite, a rarity in this area, KMF, SA

Measurements:  83 x 60 x 37 mm

Description:   A rarity from the Kalahari Manganese Fields is quartz on manganite. Gemmy quartz crystals, up to 18 mm long, sit on a matrix of manganite and, what appears to be, iron ore. 

The quartz crystals are mostly blueish / grey and have a fine scattering of manganite on them. A small section of the quartz crystals have a yellow coating of an unknown mineral. 

There is limited damage were the specimen parted from its mother rock.

Weight of Specimen:  162.1 g

Chemical Composition:  SiO2  (quartz)  
                                       Mn3+O(OH)  (manganite)

Hardness on Mohs Scale:  (quartz)  7 
Location:  Kalahari Manganese Fields, Kuruman Area, South Africa.

Specimen Code:  SKMF 022

US $ 350


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