Results 11 to 20 of about 23,092 (234)
, 2014 Educação Superior::Ciências Exatas e da Terra::GeoCiênciasThis image shows the mineral Biotite, common in the group of silicates and part of the group of micas. It contains potassium, magnesium, iron and aluminum in its composition. As the other minerals
U.S. Geological Survey
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Characterization of potassic alteration in the Iju porphyry copper deposit using mineral chemistry of biotite and chlorite [PDF]
پترولوژی, 2018 The Iju porphyry copper deposit is located 72 km NE of Shahr-e- Babak in the western part of the Dehaj - Sardueih zone in the Kerman Cenozoic volcano - plutonic belt.
Alireza Zarasvandi +4 more
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Geochemistry, Geophysics, Geosystems, 2021 The composition of igneous biotite is a potential indicator of the geologic environment of its host rock. Here, we apply two machine learning models−eXtreemly Greedy tree Boosting (XGBoost) and light gradient boosting machine (LightGBM) to classify ...
Rupashree Saha +2 more
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Indonesian Journal on Geoscience, 2018 DOI: 10.17014/ijog.5.1.47-64This study aims to understand the petrography and chemistry of both magmatic and hydrothermal biotites in porphyry copper-gold deposits, and to evaluate the fluid compositional changes during alteration processes.
Arifudin Idrus
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Biotite: a unifying open source computational biology framework in Python [PDF]
, 2022 Background: As molecular biology is creating an increasing amount of sequence and structure data, the multitude of software to analyze this data is also rising.
Hamacher, Kay, Kunzmann, Patrick
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Indonesian Journal on Geoscience, 2014 DOI: 10.17014/ijog.v5i1.93Based on the depth contour, the sea bottom morphology in southern part of the researched area is very steep, while in the northern area it is sloped slightly.
Deny Setiady
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Incorporation of Metal Oxide on Mica Flakes as a Green Pearlescent Pigment: Preparation and Analysis [PDF]
Iranian Journal of Chemical Engineering, 2020 Pearlescent pigments are a variety of pigments that can generate an optical pleasant appearance in the system because of the ability of easy parallel orientation of a large number of platelet-like particles.
M. Cheraghipoor, M. Zakeri
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Experimental Evaluation and Optimisation of Sealed‐Tube Combustion Methods for Silicate Nitrogen Extraction [PDF]
Rapid Commun Mass SpectromABSTRACT Rationale Nitrogen (N) abundance and isotopic compositions in silicate rocks are commonly measured by sealed‐tube continuous‐flow isotope ratio mass spectrometry (CF‐IRMS), but combustion protocols vary widely. It remains uncertain how the quality of data obtained from different published methods compares for differing sample types. Methods To
Holland F +4 more
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Литосфера, 2020 Research subject. The article discusses the features of the relationship between biotite and amphibole on the example of magmatogene melanocratic rocks from a number of granitoid massifs of the Urals. These rocks form xenoliths and synplutonic intrusions
S. V. Pribavkin
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Mineral Chemistry of Chlorite Replacing Biotite from Granitic Rocks of the Canadian Appalachians [PDF]
Journal of Sciences, Islamic Republic of Iran, 2009 Chlorite flakes, as a product of alteration of biotite, the dominant ferromagnesian mineral in the Paleozoic granitic rocks of the Canadian Appalachians, have been analyzed by electron microprobe for major elements and by 57Fe M?ssbauer spectroscopy for ...
A.A. Tabbakh Shabani
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