Hydrozincite
Zn₅(CO₃)₂(OH)₆

     Hydrozincite is a rare secondary mineral at Mont Saint-Hilaire. It displays weak white fluorescence under LW and SW.

PHYSICAL CHARACTERISTICS:

Color ranges from white to grayish-blue.
Luster is porcelaneous.
Diaphaneity is translucent.
Crystal System is monoclinic; C2/m.
Crystal Habits include thin globular crusts displaying some
   radiating structure.
Cleavage {100} is perfect.
Fracture is not apparent.
Hardness is 2 - 2.5
Specific Gravity is approximately 4.0 g/cm³.
Streak is white.
Associated Minerals include aegirine, albite, calcite and
   sphalerite.
Distinguishing Features: Crystal habit and fluorescence.
Origin: Named in 1853 for its composition, a hydrous zinc-bearing
   carbonate.

CLASSIFICATION:

REFERENCES:
MinRec 21:315 (1990), Dana 8:493-494 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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