| contributor | IGSN Technical Committee | ||||||
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| source | https://en.wikipedia.org/wiki/Rock_(geology) | ||||||
| broader |
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| definition | Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids. For example, granite, a common rock, is a combination of the minerals quartz, feldspar and biotite | ||||||
| type |
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| in scheme | IGSN codelist original | ||||||