Relations between morphology of corundum and trace element composition

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Marco E. Ciriotti
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Relations between morphology of corundum and trace element composition

Messaggio da Marco E. Ciriotti » mer 14 lug, 2021 10:34

Referenza:
▪ Sorokina, E.S. (2021): Relations between morphology of corundum and trace element composition. Zapiski RMO, 150, 145-153.

Abstract:
The paper displays results of the study, which show that changes of corundum morphology are directly linked with various ranges of minor Cr and Fe contents. Cr3+ ions, being larger than Al3+ ions, entering in the crystal structure make it elongated along the axis с. The mutual entering of Cr3+ and Al3+ ions leads to the accelerated growth of the dipyramidal faces. The larger content of minor Fe, as related the Cr one (3 : 1 and more) put forward to the quicker growth of rhombohedron and the c pinacoid faces.
Marco E. Ciriotti

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