Ca₃Al₂(SiO₄)₃

Grossular, a member of the garnet group, minerals species found in Canada.

PHYSICAL CHARACTERISTICS:

Color is usually bright orange to orange-brown or reddish brown.
Luster is vitreous to adamantine.
Diaphaneity is transparent to translucent.
Crystal System is isometric; Ia3d.
Crystal Habits include sharp trapezohedrons to 10mm.
Cleavage none.
Fracture is subconchoidal.
Hardness is 7.
Specific Gravity is approximately 3.6 g/cm³.
Streak is white.
Associated Minerals include albite, allanite, calcite, epidote,
fluorite, microcline, molybdenite, prehnite, pyroxene group,
pyrrhotite and titanite.
Distinguishing Features: Crystal habit and luster.
Origin: Named in 1811 for its ressemblance to pale green
specimens of the gooseberry, whose botanical name is
Ribes grossularia.

CLASSIFICATION:

REFERENCES:
MinRec 21:313 (1990),Dana 8:1046-1048 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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