http://resource.geosciml.org/classifier/cgi/commodity-code/feldspar-gemstone
definition | The feldspars are a group of minerals that have similar characteristics due to a similar structure. | ![]() |
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narrower |
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notation |
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source | http://www.galleries.com/Feldspar_Group | ![]() |
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type |
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broader |
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in scheme | commodity code | ||||||||||
is primary topic of | feldspar gemstone |