Botryoidal Chalcedony - SKMF 054

Interesting formation of light blue chalcedony

Measurements:  47 x 35 x 33 mm

Description:  An interesting formation of light blue, botryoidal chalcedony. 

The specimen has a few nicks. 

We bought this specimen as part of a mixed collection, and are therefore not sure where it originally came from.

Weight of Specimen:  65.0 g

Chemical Composition:  SiO2  (quartz var. chalcedony)

Hardness on Mohs Scale:  (quartz var. chalcedony)  7

Location:  Possibly Kalahari Manganese Fields, Northen Cape, South Africa (?)

Specimen Code:  SKMF 054

US $ 75