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The expanding network of mineral chemistry throughout earth history reveals global shifts in crustal chemistry during the Proterozoic. [PDF]
Sci Rep, 2022 Earth surface redox conditions are intimately linked to the co-evolution of the geosphere and biosphere. Minerals provide a record of Earth’s evolving surface and interior chemistry in geologic time due to many different processes (e.g.
Moore EK +4 more
europepmc +2 more sources
Condensation Calculations in Planetary Science and Cosmochemistry [PDF]
, 2023 Cool a piece of the Sun to 1000 K at one millibar pressure to yield a mineral assemblage consistent with those found in the most primitive meteorites. This is an equilibrium or fractional condensation experiment simulated by calculations using equations of state for hundreds of gaseous molecules, condensed mineral solids, and silicate liquids, the ...
Ebel, Denton S.
arxiv +3 more sources
Petrography of Middle Jurassic to Early Cretaceous sandstones in the Kutch Basin, western India: Implications on provenance and basin evolution [PDF]
Journal of Palaeogeography, 2018 This paper investigates the provenance of Middle Jurassic to Early Cretaceous sediments in the Kutch Basin, western India, on the basis of mineralogical investigations of sandstones composition (Quartz–Feldspar–Lithic (QFL) fragment), Zircon–Tourmaline ...
Angana Chaudhuri +2 more
doaj +3 more sources
CRYSTAL CHEMISTRY OF HYDROUS MINERALS [PDF]
, 2001 Hydrogen has long been appreciated for its role in geological processes of the Earth's crust. However, its role in Earth's deep interior has been neglected in most geophysical thinking. Yet it is now believed that most of our planet's hydrogen may be locked up in high pressure phases of hydrous silicate minerals within the Earth's mantle.
Zhao, Yusheng +3 more
openaire +3 more sources
Mineral chemistry and thermobarometry of Dorbeh diorite metamorphic aureole, south of Urmia [PDF]
پترولوژی, 2023 Hercynite-rich spinel is a typical mineral of both quartz-bearing and quartz-free metapelitic rocks that form under low-pressure high-temperature conditions in the granulite facies (Sengupta et al., 1991) or upper-amphibolite facies of regional and ...
Monir Modjarrad, Hadi Omrani
doaj +1 more source
Oxidative Phosphorus Chemistry Perturbed by Minerals [PDF]
Life, 2022 Life is a complex, open chemical system that must be supported with energy inputs. If one fathoms how simple early life must have been, the complexity of modern-day life is staggering by comparison. A minimally complex system that could plausibly provide pyrophosphates for early life could be the oxidation of reduced phosphorus sources such as ...
Arthur Omran +3 more
openaire +4 more sources
Journal of Economic Geology, 2021 Introduction The Sari Gunay veining and breccia epithermal gold mineralization is situated between the Urumieh-Dokhtar magmatic belts and the Sanandaj-Sirjan metamorphic zone in central-NW Iran.
Behzad Mehrabi +2 more
doaj +1 more source
Frontiers in Earth Science, 2023 Understanding the evolution of magma storage conditions on volcanoes which have had more than one caldera-forming eruption (CFE) is important to know about past and present conditions, as a key to forecast future potential hazards.
Aditya Pratama +19 more
doaj +1 more source
Journal of Economic Geology, 2020 Introduction Thermobarometric models based on the chemical equilibrium among coexisting mineral-mineral or mineral-melts pairs are useful tools widely used to estimate the P-T path and chemical evolution during igneous processes. The high sensitivity of
Marzieh Veiskarami +3 more
doaj +1 more source
Vestnik MGTU, 2021 Multi-stage deposition of metals from a sulfate solution with a high concentration of iron, aluminum, copper, zinc, and nickel has been studied. The concentrations of the components correspond to the composition of the sub-basement waters of the Gaisky ...
Kremenetskaya I. P. +4 more
doaj +1 more source