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A variety of fine-grained layered silicate minerals called muscovite, including true mica mica, muscovite and magnesite, and potassium-deficient mica illite, which provide the geothermal and geochemical conditions at the time of formation Indicators, making them useful exploration vectors. Geochemical conditions can be tracked using the Al-OH scalar reported by the TerraSpec Halo mineral identifier, while the illite spectral maturity (ISM) scalar reported by Halo (Doulblier et al., 2010) can provide an indicator of thermal maturity.
TerraSpec Halo mineral identifiers use white mica contained in a mineral library organized by composition. Potassium muscovite muscovite and magnesite, sodium muscovite paragonite represents real muscovite. The addition of Mg 2 or the substitution of Fe 2 and Si 4 to Al 3 is a characteristic of the muscovite-magnesite series. The classification of illite is similar. Therefore, the increasing sodium salt conditions indicate that the mineralogy has shifted from muscovite and/or illite (labeled K-Illite in the Halo mineral library) to azeolite and/or azeotrope illite (labeled Na in the Halo mineral library). -Illite).
Similarly, the conditions of increasing magnesium enrichment are indicated by the mineralogy shift to pphengite and/or pphengite illite (labeled Mg-Illite in the Halo mineral library).
By detecting mineralogy and reporting ISM scalars, the TerraSpec Halo mineral identifier can be used to track geothermal gradients. As the level of metamorphism increases, montmorillonite is transformed into illite. Then convert them into muscovite (and other true mica). It is easy to detect subtle geothermal trends in illite and draw them using Halo's ISM scalar. As the illite is converted into real mica, this will track the dehydration process of the illite.
This information is derived from materials provided by Malvern Panalytical and has been reviewed and adapted.
For more information on this source, please visit Malvern Panalytical.
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