Edenite
NaCa₂Mg₅Si₇AlO₂₂(OH)₂

     Edenite, a member of the large amphibole group found at Mont Saint-Hilaire was recently identified.

PHYSICAL CHARACTERISTICS:

Color is bluish green, colorless, gray or white.
Luster is vitreous.
Diaphaneity is translucent.
Crystal System is monoclinic; C2/m.
Crystal Habits include tabular crystals.
Cleavage {110} is perfect, parting on {100} and {001}.
Fracture is uneven to subconchoidal.
Hardness is 5 - 6.
Specific Gravity is approximately 3.0 - 3.28 g/cm³.
Streak is white.
Associated Minerals include (??).
Distinguishing Features: Brittle.
Origin: Named in 1839 by Glocker for the locality, Edenville,
   Orange Co, NY, U.S.A.

CLASSIFICATION:

REFERENCES:
CanMin 32:843-854 (1994), Dana 8:1353-1354 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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