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Hydrocerussite
Pb3(CO3)2(OH)2

     The occurrence of hydrocerussite at MSH is extremely rare.

PHYSICAL CHARACTERISTICS:

Color is usually white.
Luster is adamantine.
Diaphaneity is opaque.
Crystal System is hexagonal; (??).
Crystal Habits include prismatic crystals to 0.5mm and crusts
   on galena.
Cleavage {001} is perfect.
Fracture is (??).
Hardness is 3.5
Specific Gravity is approximately 6.8 g/cm3.
Streak is white.
Associated Minerals include arsenopyrite, beudantite, galena,
   gonnardite, hemimorphite, mimetite, muscovite, natrolite,
   pyrite and sphalerite.
Distinguishing Features: none, difficult to distinguish visually.
Origin: Named in 1877 to reflect its water (Greek hydor) content
   and compositional similarity to cerussite.

CLASSIFICATION:

Dana System
# 16a.2.2.1

Strunz Classification
# V/C.08-10

REFERENCES:
MinRec 21:315 (1990), Dana 8:485-486 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
¤¤

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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