Item talk:Q158202: Revision history

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24 October 2023

28 August 2023

  • curprev 20:3420:34, 28 August 2023Sky talk contribs 346 bytes +346 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."