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Comprehensive
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saponite a hydrous silicate of aluminum and magnesium that is found as a soft, soapy filling in cavities of certain rocks.
sapphirine a silicate of magnesium and aluminum having a bluish green color. [1/3 definitions]
spinel any of a group of hard, crystalline mineral oxides containing magnesium and aluminum, the red variety of which is used as a gem.
stilbite a glossy zeolite mineral containing calcium, aluminum, and sodium, often formed as sheaflike crystalline masses.
tinfoil tin, aluminum, or a tin alloy rolled out in a thin, flexible sheet and used as wrapping or lining, as for food and food containers.
tourmaline a complex silicate mineral containing several elements, most importantly boron and aluminum, used in electronic instruments and, in its colorful and transparent varieties, as a gemstone.
turquoise an opaque blue or bluish green mineral containing copper and aluminum, often cut and polished for use as a gemstone. [1/3 definitions]
zeolite any of a group of naturally hydrated aluminum silicates that readily gain or lose water of hydration. [1/2 definitions]