Mineral Properties, Photos, Uses and Descriptions
Andalusite. Andalusite is a metamorphic mineral and a strongly pleochroic gem material. ... Topaz is a mineral best known as a durable gemstone and its use in Mohs Hardness Scale. ... fire bricks, magnesium metal and more. Olivine. Olivine - Abundant in Earth*s mantle. A constituent of meteorites.
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