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

Barylite crystals - click for larger pic
Barylite crystals
© Gilles Haineault

Barylite crystals - click for larger pic
Close-up of barylite crystals
© Doug Merson

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Home > Mineral Descriptions > Barylite - (3 Photos)



Barylite
BaBe2Si2O7

     Barylite is an extremely rare mineral at MSH, having only a few specimens recovered. It is a late stage mineral in the paragenesis.

PHYSICAL CHARACTERISTICS:

Color is usually colourless to white.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is orthorhombic; Pn21a.
Crystal Habits include very thin elongated, bladed single crystals
   and as divergent groups of crystals to 5mm.
Cleavage {001} and {100} are perfect.
Fracture has not been observed.
Hardness is 7.
Specific Gravity is approximately 4.0 g/cm3.
Streak is white.
Associated Minerals include aegirine, analcime, barite, biotite,
   burbankite, calcite, donnayite, eudialyte, ewaldite, harmotome,
   hilairite, microcline, nepheline and zircon.
Distinguishing Features: Crystal habit.
Origin: Named in 1876 from the Greek barys, weight, referring
   to its specific gravity.

CLASSIFICATION:

Dana System
# 55.1.1.1

Strunz Classification
# VIII/C.2-80

REFERENCES:
MinRec 21:298 (1990), Dana 8:1133 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
--

MX
--

SS
--

MC
¤¤

HF
--

BR
--

SX
--

FR
--

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