Results 41 to 50 of about 22,061 (230)

Effects of Temperature and Particle Size Distribution on Barite Reduction by Carbon monoxide Gas [PDF]

open access: yesJournal of Particle Science and Technology, 2016
In this research, a mineral barite powder was reduced by carbon monoxide gas and the effects of reduction time and temperature was investigated as well as barite particle size.
Saeed Vakilpour, Ahmad Ghaderi Hamidi
doaj   +1 more source

Drilling the Marathousa palaeo‐lake in Greece (Peloponnese): inferring the environmental context of a Middle Pleistocene archaeological site

open access: yesBoreas, EarlyView.
The Megalopolis Basin is located in the central Peloponnese (Greece), a region that is situated along one of the primary Pleistocene biogeographical corridors for intracontinental hominin migration. The basin comprises several hundred metres of Plio‐Pleistocene sediments alternating between clastics and lignites.
Ines J. E. Bludau   +13 more
wiley   +1 more source

Characterisation of barite bodies from Camal Island (Kenyir Geopark), Terengganu, Malaysia

open access: yesBulletin of the Mineral Research and Exploration
The aim of this study is to understand the geological aspect and characterisation of barite bodies in Camal Island, a part of Kenyir National Geopark, in Terengganu state, Malaysia.
Ain Syafika Mat Husin   +2 more
doaj   +1 more source

Barite mineralization in Kalana speleothems, Central Estonia: Sr, S and O isotope characterization [PDF]

open access: yesEstonian Journal of Earth Sciences, 2017
Barite mineralization in association with calcitic speleothem precipitates in cave structures in Silurian Aeronian carbonate rocks in Kalana quarry, Central Estonia, was studied. Barite mineralization in Kalana occurs in two generations – euhedral bladed-
Mikk Gaškov   +4 more
doaj   +1 more source

Barite

open access: yes, 1988
More than 150 occurrences or deposits of barite (barium sulphate, BaSO 4) have been recorded in Canada; however, deposits of economic significance are confined largely to Newfoundland, Nova Scotia, Ontario and British Columbia. There are three main producers of barite at present: one with a mine at Brookfield, N.S., another with mines near Matachewan ...
R K Collings, P R A Andrews
openaire   +1 more source

Sedimentology of silica granules and haematite in the 3.47 Ga Antarctic Creek Member, Mount Ada Basalt, Western Australia

open access: yesSedimentology, EarlyView.
ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
wiley   +1 more source

Control de vocabulario: orígenes, evolución y proyección

open access: yesCiência da Informação, 2015
Las cuestiones relacionadas con el control de vocabulario están fuertemente asentadas en la literatura de la Organización del Conocimiento desde los orígenes mismos de este campo temático.
Mario Barité
doaj  

Active growth of non-hydrothermal subaqueous and subaerial barite (BaSO4) speleothems in Lechuguilla Cave (New Mexico, USA)

open access: yesInternational Journal of Speleology, 2020
Barite (BaSO4) speleothems have been reported from caves around the globe and interpreted to have chiefly formed in phreatic, hypogene, hydrothermal settings.
Max Wisshak   +3 more
doaj   +1 more source

Application of passive seismic to the detection of buried hollows [PDF]

open access: yes, 2015
Pilot studies involving the use of passive seismic techniques in a range of geological settings and applications, e.g., mapping bedrock, studies of soil erosion and Quaternary mapping have shown that it is a versatile, non-invasive and economic ...
Banks, VJ   +7 more
core   +1 more source

Geochemical characteristics of mercurian tetrahedrite, barite and fluorite from the Duboki Vagan, Glumac and Dubrave-Dugi Dol barite deposits, south of Kreševo, Mid-Bosnian Schist Mts.

open access: yesGeologia Croatica, 2011
The geochemical characteristics of tetrahedrite and barite of the Duboki Vagan barite deposit near the town of Kreševo in the MBSM (Mid-Bosnian Schist Mountains) have been determinated and correlated with the results of previously studied barite ...
Ivan B. Jurković   +2 more
doaj   +1 more source

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