Bradleyite
Na₃Mg(PO₄)(CO₃)

     Bradleyite is yet another rare species for MSH.

PHYSICAL CHARACTERISTICS:

Color is usually colorless or yellow.
Luster is vitreous.
Diaphaneity is transparent to translucent.
Crystal System is monoclinic; P2₁m.
Crystal Habits include tabular plates of crystals and lozenges.
Cleavage (??).
Fracture is (??).
Hardness is 3.5
Specific Gravity is approximately 2.72 g/cm³.
Streak is white.
Associated Minerals include bonshtedtite, burbankite, ilmenite,
   lorenzenite and natrolite.
Distinguishing Features: Crystal habits.
Origin: Named in 1941 for Wilmot Hyde Bradley, geologist,
   U.S. Geological Survey.

CLASSIFICATION:

REFERENCES:
Dana 8:957-958 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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