laumontite definition

  • noun:
    • A mineral, of a white shade and vitreous luster, because of the chemical formula CaAl2Si4O12·4H2O. Its a hydrous silicate of alumina and lime. Exposed to the atmosphere, it loses water, becomes opaque, and crumbles.
    • A mineral, of a white color and vitreous luster. It's a hydrous silicate of alumina and lime. Exposed to air, it manages to lose liquid, becomes opaque, and crumbles.
    • A hydrous silicate of aluminium and calcium.

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    • A mineral, of a white shade and vitreous…
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