Results 91 to 100 of about 14,112 (239)

Bentonite clays of Russia and neighboring countries

Georesursy, 2019
Bentonite clay is an important natural material, widely used in many industries. The purpose of this article is to analyze the mineral resource base of bentonite clays in Russia.
Peter E. Belousov, Victoria V. Krupskaya
doaj   +1 more source

Thermal histories of El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155): Implications for the diversity of IAB‐ungrouped iron meteorites and their parent bodies

Meteoritics &Planetary Science, EarlyView.
Abstract This study provides the first petrographic, crystallographic, and chemical comparison between El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155), two particular IAB‐ungrouped iron meteorites. Both contain exceptionally large graphite nodules and “flowers”, providing unique insights into carbon behavior in metallic melts and cooling ...
L. Perez, M. Roskosz, F. Danoix, L. Kern, V. Megevand, C. Brillatz, B. Devouard, J. Gattacceca, M. Gounelle   +8 more
wiley   +1 more source

Petrography of the Mesozoic succession of South Wales [PDF]

, 1960
RESP ...
Crampton, C. B.
core   +1 more source

The Polymetallic Deposits of the Western European Plate and Structure of the Earth's Crust According to GOCE Gravity Data

Russian Journal of Earth Sciences
For the first time, the results of modern studies of the earth's crust based on gravity data from the GOCE satellite Project are used for a comparative regional metallogenic analysis of the geodynamic settings of the formation of polymetallic deposits in
Galyamov A. L., Volkov A. V., Lobanov K. V.   +2 more
doaj   +1 more source

GOLD-POLYMETALLIC MINERALIZATION OF THE RIDDER-SOKOLNOYE DEPOSIT IN THE RUDNY ALTAI (EASTERN KAZAKHSTAN) [PDF]

Минералогия, 2018
New geochemical data on distribution of gold mineralization in the ore lode sections of the Ridder-Sokolnoye deposit, the largest in Rudny Altai, confirm the crossing style of gold-quartz veins and gold-bearing stockwork relative to the zonal bodies of ...
G.D.Ganzhenko, M.A. Yudovskaya, I.V. Vikentyev   +2 more
doaj  

TEV—A Program for the Determination of the Thermal Expansion Tensor from Diffraction Data

Crystals, 2015
TEV (Thermal Expansion Visualizing) is a user-friendly program for the calculation of the thermal expansion tensor αij from diffraction data. Unit cell parameters determined from temperature dependent data collections can be provided as input.
Thomas Langreiter, Volker Kahlenberg
doaj   +1 more source

Geochemical investigation of impactites from the Boltysh impact structure and possible relationship to early Danian sediments from the Umbria–Marche Basin, Italy

Meteoritics &Planetary Science, EarlyView.
Abstract Within the Danian Scaglia Rossa Formation appears a regionally correlatable horizon cutting across multiple sections and outcrops within the Umbria–Marche Basin of NE Italy, where it is intercalated with uniform pelagic carbonate successions. This horizon is called “ALE layer” and has tentatively been interpreted as a fine‐grained volcanic ash.
Toni Schulz, Sophia Wernitznig, Christian Koeberl, Bérengère Mougel, Alessandro Montanari, Frédéric Moynier   +5 more
wiley   +1 more source

Magnetic Fabrics and Petrography of Rocksalts Reveal Preferred Orientation of Anhydrites Within a Halite Matrix

, 2022
The ecxel file contain the magnetic data used in: Issachar, R.; Weinberger, R.; Levi, T.; Barabasch, J.; Urai, J.L. Magnetic Fabrics and Petrography of Rocksalts Reveal Preferred Orientation of Anhydrites Within a Halite Matrix.
ran issachar (4623076)
core   +1 more source

Mineralogy, mineral chemistry, and redox equilibria in ten aggregate particles from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract Examination of 10 Bennu aggregate particles has revealed the presence of many phases which taken together can provide constraints on the oxygen fugacity (fO2) of Bennu samples. Phyllosilicates (saponite and serpentine), carbonates, oxides (magnetite, chromite), sulfides (pyrrhotite, pentlandite), phosphate (hydroxyapatite, Na‐Mg‐phosphate ...
K. Righter, J. Gorce, L. Le, K. Thomas‐Keprta, Z.E. Wilbur, L.P. Keller, Z. Gainsforth, T.J. McCoy, T.J. Zega, S.S. Russell, H.C. Connolly Jr., D.S. Lauretta   +11 more
wiley   +1 more source

Petrography descriptions and U-Pb zircon datasets from the Archean Pavas Block, Uruguay's Precambrian

, 2021
Petrography and U-Pb zircon analyses of the granitic – gneisses and migmatites of the Pavas Block, a segment composed of pre-Neoproterozoic basement rocks located westward of the Neoproterozoic Dom Feliciano ...
Masquelin, H (via Mendeley Data)
core   +1 more source