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13 Magnesiohornblende dehydration was studied using both high-temperature 14 thermogravimetric analysis and high-pressure differential thermal analysis (HP-DTA). 15 The high-temperature thermogravimetric analysis results revealed that 16 magnesiohornblende dehydration at high… Click to show full abstract
13 Magnesiohornblende dehydration was studied using both high-temperature 14 thermogravimetric analysis and high-pressure differential thermal analysis (HP-DTA). 15 The high-temperature thermogravimetric analysis results revealed that 16 magnesiohornblende dehydration at high temperatures could be divided into three steps: 17 848–1058 K, 1058–1243 K, and 1243–1473 K, and each step followed an n -order 18 reaction ( Fn ). The dehydration process is characterized by an oxidation- 19 dehydrogenation mechanism, and the dehydration of the last step can be explained as 20 the direct decomposition of the hydroxyl groups connected to the magnesium ions. The 21 HP-DTA of magnesiohornblende dehydration under pressures of 0.5, 1.0, 2.0, and 3.0 22
Journal Title: American Mineralogist
Year Published: 2023
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