Measurements: 59 x 16 x 15 mm
Description: A double terminated quartz crystal with partially exposed phantom on which a few small crystals grew, along with bits of feldspar. It is coated with iron oxide.
The specimen has a few small nicks.
Weight of Specimen: 24 g
Chemical Composition: SiO2 (quartz) KAlSi3O8 (feldspar)
Hardness on Mohs Scale: 7 (quartz) 6 - 6½ (feldspar)
Orange River area,
Northern Cape, South Afric
Specimen Code: NC 021