Results 31 to 40 of about 109 (66)

INVESTIGATION OF THE SHEEP CREEK CARBONATITES, RAVALLI COUNTY, MONTANA [PDF]

open access: yes, 2023
Carbonatite-related REE-Nb mineralization in southern Ravalli County, Montana was first discovered in the late 1950s and early 1960s. Over 30 discontinuous carbonatite bodies occur in a ~ 10 km2 area centered on Sheep Creek, a tributary to the ...
Risedorf, Sarah
core   +1 more source

CANCRINITE-GROUP MINERALS AT NON-AMBIENT CONDITIONS: A MODEL OF THE ELASTIC BEHAVIOR AND STRUCTURE EVOLUTION [PDF]

open access: yes, 2014
The minerals of the cancrinite group are zeolite-like compounds, sharing the [CAN]-topology of the framework. Their structure shows large 12-ring channels along [0001], bound by columns of cages, the so-called can units.
P. Lotti
core   +1 more source

TITANITE OF THE VISHNEVOGORSKY ALKALINE COMPLEX (South Ural) [PDF]

open access: yes, 2019
Titanite CaTi(SiO4 )O is a common accessory mineral of alkaline rocks and pegmatites of the Vishnevogorsky alkaline complex, South Urals. It occurs in many magmatic assemblages, is found in some metasomatites, underwent deformation and recrystallization.
V.A. Popov
core  

ALLANITE-(Nd) FROM SAPFIRINOVAYA PIT, SOUTHERN URALS: FIRST FIND IN RUSSIA [PDF]

open access: yes, 2019
Allanite-(Nd) (Ca1.20Mn0.02Nd0.33Ce0.21Sm0.07Pr0.06La0.03Gd0.02Y0.01)Σ1.95(Al1.94Fe2+ 0.46Fe3+ 0.42Mg0.08Sc0 .06Ti0.01)Σ2.97[Si2 O7 ][SiO4 ]O(OH) was found first in Russia as black crystals and grains up to 0.12 mm in size in a sapphirine-bearing rock of
A.M. Kuznetsov, A.V. Kasatkin, R. Škoda
core  

AMPHIBOLES OF ALKALINE ROCKS OF THE ILMENOGORSKY COMPLEX AND COUNTRY METAMORPHIC ROCKS, SOUTH URALS [PDF]

open access: yes, 2018
Amphiboles of the Ilmenogorsky miaskite complex and metamorphic rocks of its top are studied along the section of structural borehole C-2000, which drilled 400 m of fenitized rocks of the top and 1600 m of internal parts of the complex.
E.P. Makagonov   +2 more
core  

The sealing step in aluminum anodizing: a focus on sustainable strategies for enhancing both energy efficiency and corrosion resistance [PDF]

open access: yes, 2020
Increasing demands for environmental accountability and energy efficiency in industrial practice necessitates significant modification(s) of existing technologies and development of new ones to meet the stringent sustainability demands of the future ...
Fernandes, Fábio A. O.   +2 more
core  

NEW SPECIMEN OF THE NATURAL SCIENTIFIC MUSEUM OF THE ILMENY STATE RESERVE [PDF]

open access: yes, 2016
The most interesting new specimen of the museum of the Ilmeny State Reserve presented for last 5 years are described: a collection of samples from the oxidation zone of the Rubtsovka Cu-Zn-Pb deposit, new minerals discovered in the Urals, a collection of
M.A. Rassomakhin
core  

Hydrothermal alteration of a chevkinite-group mineral to a bastnäsite-(Ce)-ilmenite- columbite-(Fe) assemblage:interaction with a F-, CO2-rich fluid [PDF]

open access: yes, 2015
The results are presented of a textural and mineral chemical study of a previously undescribed type of hydrothermal alteration of chevkinite-(Ce) which occurs in a syenitic pegmatite from the Vishnevye Mountains, Urals Region, Russia.
Bagiński, Bogusław   +5 more
core   +1 more source

CARBONATES FROM THE VISHNEVOGORSKOE ZR-NB DEPOSIT (SOUTHERN URALS) [PDF]

open access: yes, 2015
Data on carbonates in alkaline rocks, pegmatites, and late veinlets of the Vishnevogorskoe deposit are summarized. Among 21 minerals studied, calcite is the major mineral; dolomite, ankerite, siderite, aragonite, bastnasite-(Ce), and strontianite are ...
E.I. Churin   +5 more
core  

Mineralogical and ion-exchange leaching study of a Rare Earth Element (REE) bearing ion-adsorption clay deposit [PDF]

open access: yes, 2019
Rare earth elements (REEs), La to Lu including Y, are vital elements in manufacture of catalysts and metallurgical industries, and play a critical role in meeting future energy demands, such as through their use in permanent magnets in wind turbines ...
Burcher-Jones, Cody Owen
core   +1 more source

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