Results 11 to 20 of about 454,449 (380)

The M3 project: 1- A global hyperspectral image-cube of the Martian surface [PDF]

open access: yesIcarus Volume 319, February 2019, Pages 281-292, 2021
This paper is the first paper of a series that will present the derivation of the modal mineralogy of Mars (M3 project) at a global scale from the near-infrared dataset acquired by the imaging spectrometer OMEGA (Observatoire pour la Min\'eralogie, l'Eau, les Glaces et l'Activit\'e) on board ESA/Mars Express.
arxiv   +1 more source

Aquamarine from Massangana batholith, Rondônia State: mineral chemistry and fluid inclusion data

open access: yesREM: International Engineering Journal, 2020
Beryl is usually found in granite-pegmatite systems. The addition of chromophore elements (V, Cr, Mn, Fe) into the crystalline structure favors color changes in beryl and thus generates some of the world’s expensive gems such as emerald, morganite ...
Ingrid de Souza Hoyer   +2 more
doaj   +1 more source

Mineral Chemistry and Nomenclature of Amphiboles of Garnet Bearing Amphibolites From Thana Bhilwara, Rajasthan, India [PDF]

open access: yes, 2020
Amphiboles are frequently observed in the medium to high grade metamorphic rocks of garnet bearing amphibolites from Thana. In present work, authors have discussed the mineral chemistry and nomenclature of amphiboles.
Rana, Haritabh, Thomas, H.
core   +2 more sources

A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland)

open access: yesFrontiers in Earth Science, 2020
The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing.
Luca Caricchi   +6 more
doaj   +1 more source

Review on Infrared Nanospectroscopy of Natural 2D Phyllosilicates [PDF]

open access: yesJournal of the Optical Society of America A, 2023, 2023
Phyllosilicates emerge as a promising class of large bandgap lamellar insulators. Their applications have been explored from fabrication of graphene-based devices to 2D heterostructures based on transition metal dicalcogenides with enhanced optical and polaritonics properties.
arxiv   +1 more source

Phosphorus mineral evolution and prebiotic chemistry: from minerals to microbes [PDF]

open access: yesEarth-Science Reviews, 2021
Minerals are known to control the availability of non-volatile and bio-essential elements at Earth’s surface, e.g., phosphorus (P). Therefore, the role of minerals in prebiotic chemistry is a focal point of research into the origins of life. However, the mineralogical diversity of earliest Earth is not definitively known.
Craig Walton   +9 more
openaire   +4 more sources

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

open access: yesMetals, 2017
Metals with an average crustal abundance of <0.01 ppm, which are high in supply shortage due to soaring demand, can, under the excessive environmental risk and <1% recycling rate of their production, be termed as ‘critical’ in a limited geo ...
Sadia Ilyas   +4 more
doaj   +1 more source

Structure and properties of lithium niobate ceramics produced from the batch of various genesis [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017
The paper compares the structure, mechanical and electrical properties of ceramics obtained on the basis of highly disperse monophasic lithium niobate powders synthesized by various ways.
M.N. Palatnikov   +5 more
doaj   +1 more source

Nitric acid scavenging by mineral and biomass burning aerosols [PDF]

open access: yes, 1998
The abundance of gas phase nitric acid in the upper troposphere is overestimated by global chemistry-transport models, especially during the spring and summer seasons.
Chatfield, R B   +8 more
core   +2 more sources

Extraction of Rare Earth Metals by Solid-Phase Extractants from Phosphoric Acid Solution

open access: yesMetals, 2021
Nowadays, solving the problem of rational, integrated use of the mined raw materials, the transition to waste-free technologies for its processing is a crucial task.
Olga Cheremisina   +4 more
doaj   +1 more source

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