Chlormagaluminite
(Mg,Fe²⁺)₄Al₂(OH)₁₂(Cl₂CO₃) · 2H₂O

     Chlormagaluminite is one of the newer minerals found at Mont Saint-Hilaire. It was originally called "chlor-manasseite".

PHYSICAL CHARACTERISTICS:

Color is usually colorless to yellow-brown.
Luster is pearly.
Diaphaneity is transaprent.
Crystal System is hexagonal; P6/mcm.
Crystal Habits include tabular crystals and aggregates of hexagonal
   dipyramids.
Cleavage {0001} is perfect.
Fracture is (??).
Hardness is 1.5 - 2.5
Specific Gravity is approximately 2.0 g/cm³.
Streak is white.
Associated Minerals include calcite.
Distinguishing Features: Crystal habits.
Origin: Named in 1982 for its composition: chlorine, magnesium and
   aluminium.

CLASSIFICATION:

REFERENCES:
CanMin 32:843-854 (1994), Dana 8:405 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

Legend