Neue Publikation zum Mineral Rutil

Rutile is a common accessory mineral in many rocks and ores. It carries information about the chemical and physical conditions during magmatic processes, metamorphism, or ore-forming events. Rutile is able to pick up and store many elements but it is not clear if these elements reside in its structure or in micro- to nanoinclusions. In this work, we examined W, Cr, V, and Fe in W-rich rutile (up to 17 wt.% WO3) by electron microprobe, transmission electron microscopy, X-ray absorption and Raman spectroscopy. All elements are incorporated in the structure of the rutile host and their oxidation state was quantified. Hydrogen is not present and not involved as a charge-compensating element. The poorly crystalline precursor or rutile, the mineraloid leucoxene, can be a vehicle for tungsten that enters sediments and could be used later to generate ore deposits.

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doi: 10.2138/am-2021-7653