Lizardite
Mg₃Si₂O₅(OH)₄

     Lizardite-1M, a member of the kaolinite-serpentine group, occurs very rarely at Mont Saint-Hilaire.

PHYSICAL CHARACTERISTICS:

Color is usually pale greenish-gray; terminations are tan to white.
Luster is dull to greasy.
Diaphaneity is opaque.
Crystal System is hexagonal; P31m.
Crystal Habits include tapered hexagonal crystals to 1mm terminated
   by basal pinacoids.
Cleavage {001} is perfect.
Fracture is uneven.
Hardness is 2 - 3.
Specific Gravity is approximately 2.55 g/cm³.
Streak is white.
Associated Minerals include analcime, microcline, natrolite and pyrite.
Distinguishing Features: Crystal habit.
Origin: Named in 1956 after its discovery locality, in Kennack Cove,
   The Lizard, Cornwall, England.

CLASSIFICATION:

REFERENCES:
MinRec 21:319 (1990), Dana 8:1418-1420 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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