Quartz Crystals on Matrix BARG 051

Brownish quartz crystals on matrix

Measurements:  67 x 55 x 27 mm

Description:  Quartz crystals, appearing reddish-brown to the naked eye, are coloured by reddish-brown and black specks of hematite, trapped between layers of quartz growth. The image (bottom left) shows the specimen in very bright sunlight, for seeing the specks easier. 

Some crystals have small nicks, and some of the crystals on the edge of the specimen, are damaged. The matrix (quartz and feldspar) has been trimmed at the bottom, so the specimen can display better.

Weight of Specimen:  125.1 g 

Chemical Composition:  SiO2  (quartz)
                                       KAlSi3O8  (feldspar)  

Hardness on Mohs Scale:  (quartz)  7  
                                    (feldspar)  6 - 6.5

Location:  Northern Cape, South Africa. 

Specimen Code:  BARG 051

US $ 25 


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