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Barite crystal - click for larger pic
Barite crystal
© Douglas Merson

Barite crystal - click for larger pic
Barite crystal
© Gilles Haineault

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Home > Mineral Descriptions > Barite - (2 Photos)



Barite
BaSO4

     Barite is a rare accessory mineral at Mont Saint-Hilaire.

PHYSICAL CHARACTERISTICS:

Color varies from colorless to pale, lemon or bright yellow.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is orthorhombic; Pnma.
Crystal Habits include well-formed short prisms to 2mm,
   complex tabular to equant crystals to 1cm.
Cleavage {001} is perfect, {210} less so and {010} is imperfect.
Fracture is uneven.
Hardness is 3 - 3.5
Specific Gravity is approximately 4.5 g/cm3.
Streak is white.
Associated Minerals include albite, analcime, andradite, bastnäsite,
   biotite, burbankite, calcite, chlorite group, fluorapatite, ilmenite,
   microcline, molybdenite, natrolite, pyrite, pyrophanite, pyrrhotite,
   quartz, rutile, siderite, sphalerite and zircon.
Distinguishing Features: Crystal habit and color.
Origin: Named in 1640 from the Greek barys, weight, in allusion
    to its high specific gravity.

CLASSIFICATION:

Dana System
# 28.3.1.1

Strunz Classification
# VI/A.9-20

REFERENCES:
MinRec 21:298 (1990), Dana 8:572-573 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
¤¤

HF
¤¤

BR
¤¤

SX
--

FR
--

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