Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K(Mg,Fe)3AlSi3O10(F,OH)2. It is primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include … See more Like other mica minerals, biotite has a highly perfect basal cleavage, and consists of flexible sheets, or lamellae, which easily flake off. It has a monoclinic crystal system, with tabular to prismatic crystals with an obvious See more Biotite is used extensively to constrain ages of rocks, by either potassium-argon dating or argon–argon dating. Because argon escapes readily from the biotite crystal structure at high temperatures, these methods may provide only minimum ages for many … See more Members of the biotite group are found in a wide variety of igneous and metamorphic rocks. For instance, biotite occurs in the lava of Mount Vesuvius and in the Monzoni intrusive complex of the western Dolomites. Biotite in granite tends to be poorer in magnesium than … See more WebBiotite chemistry provides quantitative fO2 within QFM and HM buffers ranging from -10.6 to -12.0 in gabbroic rocks and -11.6 to -13.5 in quartz monzodiorite, respectively. These data are also ...
Biotite Mineral Uses and Properties - Geology
WebJan 4, 2024 · Biotite chemistry as a potential vector to the center of porphyry mineralization. We display the distribution of the major and trace elements in hydrothermal biotite (re-equilibrated biotite in intrusions and secondary biotite in veins) on a west–east cross-section to a depth of 2500 m (Fig. 13a–h). Based on the above discussion and the ... WebJun 23, 2024 · Biotite mineral chemistry can provide critical insights into classification, geothermometer, geothermobarometry, oxygen fugacity, petrogenesis and tectonic setting, evaluating magmatic ... flashback club edmonton
Petrogenesis of estrela granitoid and implications for
WebAug 1, 2024 · This change in biotite chemistry causes a shift in the SWIR Fe-OH 2250 nm absorption feature to lower wavelengths, which is also correlated with an increase in gold … WebRRUFF ID: R040144. Ideal Chemistry: KMg 3 (AlSi 3 O 10 ) (OH) 2. Locality: Brinton's Quarry, Chester County, Pennsylvania, USA. Source: University of Arizona Mineral Museum 8644 [view label] Owner: RRUFF. Description: Dark green mica book. Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis. WebI am currently working on biotites from the Khetri IOCG belt, western India and want to calculate log(fH2O/fHCl) of fluid from biotite halogen chemistry.I find most of the articles have used the ... can syngonium plant grow in water