satin spar:

More on satin spar from Fact Monster:

• gypsum - gypsum gypsum , mineral composed of calcium sulfate (calcium, sulfur, and oxygen) with two ...
• calcite - calcite calcite , very widely distributed mineral, commonly white or colorless, but appearing in a ...
• spar - spar. spar. For dogtooth spar, see calcite; for fluorspar, see fluorite; for heavy spar, see ...
• Encyclopedia: Mineralogy and Crystallography - Encyclopeadia articles concerning Mineralogy and Crystallography.

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