Results 11 to 20 of about 481,510 (353)
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
Ti-Fe mineralization in Bafq anomaly no. 15, Central Iran: Insights to mineralogy and mineral chemistry [PDF]
پترولوژی, 2021 The Ti- Fe mineralization in Bafq 15 anomaly located 35 Km NW of Bafq city, and is a part of Poshte Badam Block in the Central Iran. Mineralization including magnetite, titanomagnetite, ilmenite, and minor pyrite which hosted by gabbro and pyroxenite ...
Sakine Amraei +4 more
doaj +1 more source
Nitric acid scavenging by mineral and biomass burning aerosols [PDF]
, 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
Aquamarine from Massangana batholith, Rondônia State: mineral chemistry and fluid inclusion data
REM: 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
Structure and properties of lithium niobate ceramics produced from the batch of various genesis [PDF]
Физико-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
Light scattering and absorption properties of dust particles retrieved from satellite measurements [PDF]
, 2008 We use the radiative transfer model and chemistry transport model to improve our retrievals of dust optical properties from satellite measurements. The optical depth and absorbing optical depth of mineral dust can be obtained from our improved retrieval ...
Hu, R-M., Sokhi, R.S.
core +1 more source
Scientific Reports, 2021 Syntheses of Nd2Fe14B magnetic powder by conventional method is a complicated multi-step process, which produces harmful pollutants and consumes a huge amount of energy and resources. Herein we report a simple chemical route for the preparation of (Nd–Pr)
Syed Kamran Haider +4 more
doaj +1 more source
Soil bacterial communities of a calcium-supplemented and a reference watershed at the Hubbard Brook Experimental Forest (HBEF), New Hampshire, USA [PDF]
, 2011 Soil Ca depletion because of acidic deposition-related soil chemistry changes has led to the decline of forest productivity and carbon sequestration in the northeastern USA. In 1999, acidic watershed (WS) 1 at the Hubbard Brook Experimental Forest (HBEF),
Brodie, Eoin L. +6 more
core +2 more sources
Anais da Academia Brasileira de Ciências, 2007 Gahnite electron probe microanalyses from three pegmatites (Mirador, Capoeira and Quintos) of the Borborema Pegmatitic Province in northeastern Brazil allowed to determine molar compositions ranging from 86.22 to 95.41 mol% gahnite (ZnAl2O4), 1.51 to 6 ...
Dwight R. Soares +3 more
doaj +1 more source
dragon: A New Tool for Exploring Redox Evolution Preserved in the Mineral Record
Frontiers in Earth Science, 2020 The flow of energy and elements between the geosphere and biosphere can be traced through changing redox chemistry of Earth’s surface. Deep-time trends in the mineral record, including mineral age and elemental composition, reveal a dynamic history of ...
Stephanie J. Spielman, Eli K. Moore
doaj +1 more source