Spinel from Mogok, Myanmar - A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy

Phyo, Myint Myat and Bieler, Eva and Franz, Leander and Balmer, Walter and Krzemnicki, Michael S.. (2019) Spinel from Mogok, Myanmar - A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology, 36 (5). pp. 418-435.

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Mineral inclusions within 100 gem-quality spinels from both primary marble and secondary alluvial mining sites within Myanmar's Mogok Valley were analysed using Raman microspectroscopy and scanning electron microscopy (including backscattered-electron imaging and energy-dispersive spectroscopy). The samples ranged from pink to red, orangey pink to orangey red, and grey to purplish grey. We identified a number of inclusions that are reported here for the first time in Mogok spinel: amphibole (presumably pargasite), anatase, baddeleyite, boehmite, brucite, chlorite, clinohumite, clinopyroxene, diaspore, geikielite, goethite, halite, marcasite, molybdenite, periclase and pyrrhotite. We also found several minerals that were previously known as inclusions in Mogok spinel, including anhydrite, apatite, carbonates (calcite, dolomite and magnesite), chondrodite, elemental sulphur, graphite, iron oxides or iron hydroxides, phlogopite and zircon. We further differentiated the occurrence of inclusions in spinel from different mining sites in Mogok to assess whether these mineral assemblages can enhance our understanding of the geological origin of these gems and whether the inclusions can help separate Mogok spinels from those of other marble-related deposits worldwide.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Quartärgeologie (Fleitmann)
UniBasel Contributors:Franz, Leander
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:The Gemmological Association of Great Britain
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 Jan 2022 08:15
Deposited On:25 Jan 2022 08:15

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