Grossular

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
¤¤¤           
—             —             ¤¤           —               —             —              —             —             —  

Legend

Leave a Reply

Your email address will not be published. Required fields are marked *