Ca3Al2(SiO4)3-x(OH)4x, (x=0.2 – 1.5)
Hibschite is part rare rear minerals in Canada, at Mont Saint-Hilaire. It is often cited as hydrogrossular.
Color varies from pale green, grayish-white and yellow-brown.
Luster is vitreous.
Diaphaneity is transparent to translucent.
Crystal System is isometric; Ia3d.
Crystal Habits include octahedral crystals in stacked aggregates.
Cleavage is absent.
Fracture is conchoidal.
Hardness is 7.
Specific Gravity is approximately 3.2 g/cm3.
Streak is white.
Associated Minerals include götzenite, pectolite, tadzhikite and
Distinguishing Features: Crystal habit.
Origin: Named in 1905 after Joseph Emanuel Hibsch, Teschen,
Bohemia who found the original specimen.
Dana 8:1051-1052 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH PE AP MX SS MC HF BR SX FR
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