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Chalconatronite
Na2Cu(CO3)2 · 5H2O

     Chalconatronite is extremely rare at MSH. It was discovered by Dr Andy McDonald of Laurentian University on a few specimens during a field trip in 1998.

PHYSICAL CHARACTERISTICS:

Color is usually blue or greenish-blue.
Luster is (??).
Diaphaneity is (??).
Crystal System is monoclinic; P21/n.
Crystal Habits include anhedral grains and crusts.
Cleavage is non existent.
Fracture is (??).
Hardness is 1 - 2.
Specific Gravity is approximately 2.27 g/cm3.
Streak is pale greenish blue.
Associated Minerals include (??).
Distinguishing Features: Color, soluble in water and cold acids.
Origin: Named in 1955 after the composition: copper and natron (soda).

CLASSIFICATION:

Dana System
# 15.2.3.1

Strunz Classification
# V/D.02-70

REFERENCES:
CanMin 32:843-854 (1994), Dana 8:465-466 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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