The physical properties of sodalite:
Sodalite crystal system: equiaxed crystal system
Crystal: rhombohedral dodecahedron, cubic dodecahedron, octahedron
Aggregate type: granular, massive, tuberculosis
Hardness: 5.5~6
Cleavage/fracture: {110}Cleavage: bad to clear; jagged to shell-like fracture
Gloss: glass luster
Color: blue, gray, white, green or red
Streak: white or very light blue
Specific gravity: 2.14~2.30g/cm3
other:
(1) Under ultraviolet irradiation, it often produces orange or orange-red fluorescence.
(2) brittle
(3) Translucent to opaque
(4) When heated and melted, it will foam and become a colorless glass
Identification features:
(1) mostly blue
(2) white or near white streaks
(3) Specific gravity 2.14 ~ 2.30
(4) soluble in hydrochloric acid
(5) Putting nitric acid and adding silver nitrate will produce white silver chloride precipitate
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