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:

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

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

Legend