Double / Multi-Terminated Schorl Crystal – NERS 001
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Measurements:
63
x 30 x 26 mm
Description:
A double / multi-terminated black tourmaline (schorl) crystal with
shiny, jet
black colour and lovely lustre, of the schorl variety foitite. There
are
several minute to very small schorl crystals on its surface. Both ends
have
spectacular terminations. The few tiny, whitish bits on its surface is
either
feldspar or quartz. The
specimen has a few natural contact marks where it became
detatched from
its mother rock, and a few small nicks. Weight of
Specimen: 77.7
g Chemical
Composition: NaFe2+3Al6Si6O18(BO3)3(OH)4
(schorl)
Hardness on
Mohs Scale: 7.5
Location:
Specimen Code:
NERS 001 US $ 75
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