http://resource.geosciml.org/classifier/cgi/commodity-code/cassiterite-gemstone
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| definition | Cassiterite is a mineral that has ornately faceted specimens with high luster. It is generally opaque, but its luster and multiple crystal faces cause a nice sparkle. | ||||||
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| source | http://www.galleries.com/Cassiterite | ||||||
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| in scheme | commodity-code original | ||||||