Hematite Crystal - SKMF 008

Hematite crystal with minute (?)olmiite crystals

Measurements:  33 x 33 x 19 mm

Description:  A hematite crystal with a few shiny surfaces and several minute and numerous very minute (?)olmiite crystals attached to it. Some of the faces have a thin, dull coating of what may be hard clay. 

There are a few minute to small nicks, and several neat pressure marks and a contact mark where presumably it parted from its matrix.

Weight of Specimen:  28.8 g

Chemical Composition:  
α -Fe2O3  (hematite)
                                        CaMn[SiO3(OH)](OH)  (olmiite) 

Hardness on Mohs Scale:  (hematite )  5-6
                                           (olmiite)  5-5.5

Location:  Kalahari Manganese Fields, Kuruman area, South Africa.

Specimen Code:  SKMF 008

US $ 120

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