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Fluorapatite
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Fluorapatite — specimen 0013, photo © NMNHS
Fluorapatite
—
specimen 0013
Origin
East Africa
Madagascar
Data
Weight:
0.45 ct;
size:
6.60 | 3.67 | 2.04 mm;
shape:
octagon;
colour:
medium light very strongly bluish green; very slightly greyish;
clarity:
slightly included;
cut:
fair;
treatment:
heating.
Notes
Clean specimen; step cut style.
Other specimens
More information from ‘Classification’
Fluorapatite
The most common rock-forming phosphate mineral; accessory in most
igneous rocks
, important in
syenites
, alkaline rocks,
carbonatites
, granite
pegmatites
; common in marbles and
skarns
(
Anthony et al., 2001—2005
).
Gemmology — gemstones
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