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Hibonite

Hibonite Madagaskar 

Hibonite, mill-Madagaskar

Hibonite, mill-video tal-Madagaskar Hibonite ((Ca, Ce) (Al, Ti, Mg) 12O19) huwa minerali iswed kannella b'ebusija ta '7.5-8.0 u struttura tal-kristall eżagonali. Huwa ...
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