Results 81 to 90 of about 1,340 (151)
CrystalsBiotite–phlogopite minerals are a complete Mg–Fe isomorphism series of phyllosilicates. A Fourier transform infrared spectroscopy (FTIR) and electron microprobe analysis (EMPA) were conducted on end-member phlogopite, Mg–biotite, and annite samples.
Zhentao Yang +4 more
doaj +1 more source
Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, Volume 38, Issue 4, Page 266-277, August 2026.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
wiley +1 more source
Emergence of Continents Stabilized the Bioavailability of Boron
Terra Nova, Volume 38, Issue 4, Page 278-284, August 2026.ABSTRACT Boron is an essential element for the development of life on Earth; borates stabilize ribose in prebiotic reactions and facilitate metabolism in higher plants. There is, however, a relatively narrow surface boron concentration range over which borates stabilize and serve as a micronutrient rather than a toxin.
Brendan V. Dyck, Jon Wade
wiley +1 more source
The Effects of Germanium Biotite Supplement as a Prophylactic Agent against Respiratory Infection in Calves [PDF]
Pakistan Veterinary Journal, 2012 Germanium biotite, a natural mineral, is comprised of mainly silicate. This mineral showed activities of increase in feed efficiency and non-specific immunostimulation in previous studies.
Myunghwan Jung1, Bock-Gie Jung2, Seung Bin Cha1, Min-Kyoung Shin1, Won-Jung Lee1, Seung Won Shin1, Jin-A Lee2, Yeon-Kwon Jung3, Bong-Joo Lee2 and Han Sang Yoo1*
doaj
From Magma to Atmosphere: Halogen Fluxes During Volcanic Eruptions
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.Abstract Volcanic eruptions release significant quantities of volatile elements into the atmosphere and stratosphere. Plinian eruptions are particularly efficient at dispersing these elements due to their large magma volumes and high eruption columns.
T. d’Augustin +11 more
wiley +1 more source
International Journal of Mining Science and TechnologyBiotite content critically influences rock mechanical behavior and threatens underground engineering stability. Uniaxial compression tests with acoustic emission (AE) monitoring were conducted on granite pegmatite samples having varying biotite content ...
Shuowei Liu +8 more
doaj +1 more source
Geosystems and GeoenvironmentThe mineral chemistry of Fe-Mg biotite has served as an aid to the petrogenesis of igneous rocks, especially for identifying the parent magma compositions. Though the interpretation of igneous and metamorphic processes utilizing biotite mineral chemistry
Parita K. Gorania +4 more
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Pegmatites of the Mokromoskovsk granite pluton
Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. ЕкологіяIntroduction. The Mokromoskovsky pluton is composed of light gray granites and dark gray granodiorites. Light gray granites are composed of oligoclase (35-40%), microcline (20-25%), quartz (30-35%), and biotite (2-5%).
Yuliia Lytvynenko
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Biotite effect on the anisotropic properties of gneiss in Eastern Himalayas, China
Journal of Rock Mechanics and Geotechnical EngineeringIntact rocks with layered microstructures, such as gneiss, exhibit strong anisotropy. Although anisotropy in the macroscopic strength of gneiss has been widely reported, the role of microstructures in tensile mechanics remains largely unclear.
Shijie Liu +4 more
doaj +1 more source