Asst. Prof. Dr. Ayşe pekrioğlu Balkıs. Rock Stability

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 Asst. Prof. Dr. Ayşe pekrioğlu Balkıs. Rock Stability Minerals which form at:  high temperatures Asst. Prof. Dr. Ayşe pekrioğlu Balkıs. Rock Stability Minerals which form at: high temperatures and pressures are least stable , and weather most quickly lower temperatures and pressures are most stable. .

 Asst. Prof. Dr. Ayşe pekrio ğlu Balkıs. Texture of Rocks SMALL CRYSTALS --------- COOLED QUICKLY Asst. Prof. Dr. Ayşe pekrio ğlu Balkıs. Texture of Rocks SMALL CRYSTALS ——— COOLED QUICKLY (because of the reduced time for atoms to attain minimum energy configuration) BIG CRYSTALS ————- COOLED SLOWLY Cooling may be so rapid, as in a volcanic eruption, that no crystalline structure develops before solidification: and an amorphous material such as obsidian (volcanic glass) is formed.

 Asst. Prof. Dr. Ayşe pekrio ğlu Balkıs. Bowens reaction series Each mineral is more stable Asst. Prof. Dr. Ayşe pekrio ğlu Balkıs. Bowens reaction series Each mineral is more stable than the one above it on the list.

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