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VS
Halloysite-7Å
Name
—
Al₂Si₂O₅(OH)₄
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
—
Specific gravity
—
white
Streak
—
vitreous
Luster
—
—
Cleavage
—
Cm
Space group
—
Clay, Kaolinite
Structural group
—
Hly-7Å · Grandfathered
IMA
—
1826
Named in
—
White, Colorless, Gray, Yellow, Brown
Typical colors
—
Al · Si · O · H
Elements
—