Colourless to white, yellowish, greenish; colourless in transmitted light.
Luster
Vitreous
Refractive Index
n = 1.480 n = 1.486 n = 1.490
Diaphaneity
Transparent, Translucent
Cleavage
Poor/IndistinctOn , poor.
Fracture
Conchoidal
Crystal Habit：Crystals acicular ; distinctly terminated crystals rare. Radial or matted aggregates of hair-like crystals; tufted; spheroidal; as incrustations or effloresences; asbestiform. Larger crystals may be hollow or contain bubbles of liquid or gas.
YueGongAnBei 44051102000467
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