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  • curprev 23:4723:47, 17 August 202479.150.160.200 talk 62,451 bytes +1,141 →‎Crystal habit and structure: I have improved the last paragraph of the "Crystal Habit and Structure" section by describing the effects of the alpha-beta transition of quartz, explaining the causes of this transition (such as the firing of ceramics, high temperatures in Earth's crust rocks, and fires affecting ornamental stones), and adding a new effect—damage to natural stones caused by fires. Please note that a clarification was pending in this paragraph. undo Tag: Visual edit

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