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Graphite
C

     Graphite-2H polytype has been found in a sodalite xenolith as small (<1mm) flakes, embedded in sodalite. Only a few specimens have been recovered.

PHYSICAL CHARACTERISTICS:

Color is black.
Luster is metallic.
Diaphaneity is opaque.
Crystal System is hexagonal; P63/mmc.
Crystal Habits include the flakes embedded in sodalite.
Cleavage {001} is perfect.
Fracture is not observed.
Hardness is 1.
Specific Gravity is approximately 2.1 g/cm3.
Streak is black.
Associated Minerals include eudialyte, ussingite and villiaumite.
Distinguishing Features: Extremely rare.
Origin: Known since antiquity; its name comes from the Greek,
   graphein, to write, alluding to its ancient use as a crayon.

CLASSIFICATION:

Dana System
# 1.3.6.2

Strunz Classification
# I/B.02-10

REFERENCES:
MinRec 21:313 (1990), Dana 8:33-34 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
¤¤

FR
--

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