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Natrosilite
Na2Si2O5

     Natrosilite is another rare species at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually white.
Luster is silky.
Diaphaneity is transparent to translucent.
Crystal System is monoclinic; P21/a.
Crystal Habits include elongated crystals to 0.5mm
Cleavage {100} is micaceous, {001} is distinct and {011} is poor.
Fracture is even.
Hardness is (??).
Specific Gravity is approximately 2.5 g/cm3.
Streak is white.
Associated Minerals include revdite.
Distinguishing Features: Crystal habit.
Origin: Named in 1975 for its composition: a sodium silicate.

CLASSIFICATION:

Dana System
# 74.3.5.1

Strunz Classification
# VIII/H.05-10

REFERENCES:
Dana 8:1564-1565 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
¤¤

FR
--

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