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:
Dana System
# 51.4.3b.2
Strunz Classification
# VIII/A.08-70
REFERENCES:
MinRec 21:313 (1990),Dana 8:1046-1048 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH PE AP MX SS MC HF BR SX FR
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