chalk (Q41362)

From geokb
Revision as of 17:10, 24 October 2023 by Sky (talk | contribs) (‎Changed an Item: Updated rock class item with Geoscience Ontology GSRM subclass data)
A generally soft, white, very fine-grained, extremely pure, porous limestone
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chalk
A generally soft, white, very fine-grained, extremely pure, porous limestone

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