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Hibschite crystals - click for larger pic
Hibschite crystals
L. Horváth sp.
Photo by Violet Anderson
© Royal Ontario Museum

Hibschite crystals - click for larger pic
Hibschite crystals
© Doug Merson

Hibschite crystals - click for larger pic
Hibschite crystals
© Modris Baum

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Home > Mineral Descriptions > Hibschite - (3 Photos)



Hibschite
Ca3Al2(SiO4)3-x(OH)4x, (x=0.2 - 1.5)

     Hibschite is rare at Mont Saint-Hilaire. It is often cited as hydrogrossular.

PHYSICAL CHARACTERISTICS:

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
   vesuvianite.
Distinguishing Features: Crystal habit.
Origin: Named in 1905 after Joseph Emanuel Hibsch, Teschen,
   Bohemia who found the original specimen.

CLASSIFICATION:

Dana System
# 51.4.3d.1

Strunz Classification
# VIII/A.08-80

REFERENCES:
Dana 8:1051-1052 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

Legend