Sky
no edit summary
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→Geoscience Ontology Description
15:24
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Updated rock class item discussion page with longer source data descriptions
13:57
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Created page with "= Description from IUGS Simple Lithology = Igneous rock in which the framework of the rock consists of crystals that are too small to determine mineralogy with the unaided eye; framework may include up to 50 percent glass. A significant percentage of the rock by volume may be phenocrysts. Includes rocks that are generally called volcanic rocks."
20:34
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