(Ba,Ca)AlSi10 · H
Edingtonite, a member of the zeolite, is relatively rare at Mont Saint-Hilaire.
PHYSICAL CHARACTERISTICS:
Color is usually colorless.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is orthorhombic;
Crystal Habits include small hollow tetragonal prisms with fibrous
terminations.
Cleavage {110} is perfect.
Fracture is uneven.
Hardness is 4.
Specific Gravity is approximately 2.83 g/cm
Streak is white.
Associated Minerals include aegirine, analcime, calcite, ilmenite
and natrolite.
Distinguishing Features: Crystal habit.
Origin: Named in 1825 for James Edington (1787-1844), Glasgow,
Scotland, who found the first specimens.
CLASSIFICATION:
Dana System
# 77.1.5.6
Strunz Classification
# VIII/J.21-80
REFERENCES:
MinRec 21:306 (1990), Dana 8:1683-1685 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH
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