Results 71 to 80 of about 10,401 (241)
The role of complexing agents in the flotation of pentlandite-pyroxene mixtures
, 2003 Bibliography: leaves 137-146.This study examines the role complexing agents play in pentlandite-pyroxene flotation and focuses on the surface chemistry and interaction between valuable and gangue minerals as well as the interaction of complexing agents ...
Shackleton, Natalie Jean
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Diffusion kinetics of 3He in pyroxene and plagioclase and applications to cosmogenic exposure dating and paleothermometry in mafic rocks [PDF]
GeochronologyIn this study, we investigate the diffusivity of cosmogenic 3He in a variety of plagioclase and pyroxene compositions, and its application to paleothermometry and exposure dating in these minerals, through stepwise degassing experiments. While cosmogenic
M. Bergelin +5 more
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Thermochemistry of jadeite—diopside pyroxenes
Geochimica et Cosmochimica Acta, 1980 Abstract The enthalpies of solution of seven synthetic clinopyroxenes on the join CaMg2Si2O6 (diopside)-NaAlSi2O6 (jadeite), of two natural low-Fe ordered omphacites near the 1:1 composition, and of a nearly pure natural jadeite, were measured in molten Pb2B2O5 at 970 K.
Wood, B +3 more
openaire +1 more source
Investigation of the surface properties of gangue minerals in PGM bearing ores
, 2005 Bibliography: leaves 90-95.The recovery of Platinum Group Minerals (PGM) and associated sulphides by froth flotation from the Bushveld Igneous Complex is complicated by the presence of naturally floatable gangue minerals such as talc.
Martinovic, Jasmina
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Gunung Api purba Watuadeg: Sumber erupsi dan posisi stratigrafi
Indonesian Journal on Geoscience, 2014 http://dx.doi.org/10.17014/ijog.vol3no3.20081Pillow lava flows of pyroxene basalt containing 50 wt.% SiO are exposed at Opak River, west of Watuadeg Village, Sleman - Yogyakarta. The length of flow structures is between 2 – 10 m, with diameter of 0.5 – 1.
Sutikno Bronto +3 more
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Solid Earth Sciences, 2020 The Cishan gold deposit is a newly discovered medium-scale independent skarn gold deposit located in the Tongling ore cluster area of the Middle-Lower Yangtze Metallogenic Belt, and the ore-related intrusion is the Cishan pyroxene diorite. In this study,
Shasha Liu +5 more
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Investigating the relative adsorption of polymeric depressants on pure minerals
, 2011 The aim of this study was to investigate the relative adsorption of polymeric depressants on pure minerals. The minerals used were talc, pyroxene, plagioclase, chromite and chalcopyrite and the depressants used were guar gum and carboxymethyl cellulose ...
Mhlanga, Sabatha Sanele
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The iron isotope composition of pyroxene from the Skaergaard layered mafic intrusion, East Greenland
, 2023 Iron isotopes show small fractionations in igneous rocks emplaced at high temperature, but the processes by which these fractionations originate are still debated.
NC DOCKS at East Carolina University +1 more
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The modular structure of pyroxenes
European Journal of Mineralogy, 2016 The structures of pyroxenes can be described as cell-twins based on a common module (a layer) consisting of half the unit cell of the P 2 1 / c polymorph. Atomic models of the different polymorphs are computed and the close similarity between the models and the corresponding experimental structures is shown.
Massimo Nespolo, Mois I Aroyo
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, 1984 Low-temperature heat capacities (5-330 K) have been measured by adiabatic calorimetry for synthetic caAl2sio6 glass and pyroxene. The values of siq.15 -s$ are 155.3 J/mol . K for the glass and 135.3 J/mol ' K for the pyroxene. These entropies do not
B S Hetuttncway +3 more
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