Measurements: 33 x 25 x 22 mm
Description: A well-formed schorl crystal pair (main crystal 14 mm long) sits on / is partially embedded in a lovely, well-formed floater feldspar crystal, that has some traces of mica on its surface, giving it a few shiny patches.
The specimen displays well on a flat surface, in a number of positions. The image (bottom left) shows one of the sides of the feldspar crystal.
The schorl crystals are not terminated, and has only a small nick (easily seen on these images).
Weight of Specimen: 22.9 g
Chemical
Composition: NaFe2+3Al6Si6O18(BO3)3(OH)4 (schorl)
KAlSi3O8 (feldspar)
Hardness
on Mohs Scale: (schorl / black tourmaline) 7.5
(feldspar)
6 - 6.5
Location: Zimbabwe, Africa.
Specimen
Code:
VAR
040
US $ 25
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