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·Northern Sweden is a region with significant geologic and economic importance for the European Union and hosts several large mineral deposits identified and exploited from the 17 th century onward The Kiruna mining district belongs to the northern Norrbotten ore province and is known as the type locality for Kiruna type iron oxide apatite IOA deposits hosting the
·The significant role in high tech and green technologies recent outstripping demand and constrained global supply of rare earth elements REEs have led to the exploration of phosphate deposits worldwide as a sustainable source for the recovery of REEs as by products In this context the Eppawala Phosphate Deposit EPD in Sri Lanka can be
·The temperature sensitivity of the U Pb apatite system 350 570 °C makes it a powerful tool to study thermal histories in the deeper crust Recent studies have exploited diffusive Pb loss from
Apatite in Sri Lanka is mined from Eppawala Eppawala Rock Phosphate or ERP The finely ground product is used as a direct application fertilizer for tea rubber and coconut ERP is an indiscriminate mixture of more soluble primary crystals and a less soluble secondary phosphate matrix rich in ferruginous and aluminous compounds with an average P2O5 content of 30%
·Apatite evaluated in this study occurs in a Grenville aged crustal carbonatite at the Silver Crater Mine in direct contact with U bearing pyrochlore var betafite —a highly radioactive mineral Stable isotope analyses of calcite from the carbonatite yield δ18O and δ13C consistent with other similar deposits in the Grenville Province
·Apatite is the main source of phosphorous for the making of chemical fertilizers While apatite is usually recovered from phosphate orebodies as the primary product of a mining exploitation this paper documents the approach taken to produce a phosphate concentrate as a secondary product from the tailings of a niobium ore concentrator The conventional
·Abstract The Nagengkancherer Nageng silver deposit is the only independent silver mine in Qinghai Province China Here the results of LA ICP MS U Pb dating of apatite and zircon in quartz veins in this area are reported for the first time The apatite is homogeneous and bright with characteristics typical of unaltered magmatic apatite that has
·Sri Lanka is endowed with a rich base of industrial minerals despite its small land area Traditional and modernized mining methods are employed to mine graphite limestone beach mineral sand
·The apatite supergroup includes minerals with a generic chemical formula IX M1 2 VII M2 3 IV TO 4 3 X Z = 2 ; chemically they can be phosphates arsenates vanadates silicates and sulphates The maximum space group symmetry is P6 3 /m but several members of the supergroup have a lower symmetry due to cation ordering and deviations from the ideal
the flotation recovery of dolomite dropped dramatically to % and the recovery of apatite remained at about % at pH 10 Both dolomite and apatite have calcium ion on the surface The calcium ion on the surface of apatite were strongly inhibited and repelled by
·Apatite is a mineral that is composed of calcium phosphate with the chemical formula Ca5 PO4 3 OH F Cl Its importance in the production of fertilizer and other industrial applications has led to significant mining and extraction activities in many countries Uses of apatite Apatite has a variety of uses in different fields including
·The Singbhum shear zone is one of most important polymetallic mineralized zone characterized by uranium Cu and apatite magnetite mineralization Although there is unanimity regarding the hydrothermal nature of different ores the fluid characters particularly related to apatite magnetite mineralization are not very well constrained This study aims at
·Mines are known to cause severe environmental problems Mining is the extraction of minerals and other geological materials of economic value from deposits on the Earth Mining adversely affects the environment by inducing loss of biodiversity soil erosion and contamination of surface water groundwater and soil
·SEDIMENTARY GEOLOGY ELSEVIER Sedimentary Geology 95 1995 11 37 Crystal chemistry and thermodynamic and kinetic properties of calcite dolomite apatite and biogenic silica applications to petrologic problems Jane S Tribble Rolf S Arvidson Michael Lane III Fred T Mackenzie Department of Oceanography School of Ocean and Earth Science and
·MULTI STAGE TECTONOTHERMAL EVENTS IN THE NAGENG MINING AREA635 with a 193 nm NWR193 Ar F excimer laser Apatite standard MAD2 U‒Pb TIMS = ± Ma; Thomson et al 2012 was used as the primary stan dard to calibrate the U‒Pb geochronology of apatite Apatite standard McClure Mountain U Pb TIMS
·The International Mineralogical Association refers to the mineral as Apatite CaOH This distinguishes it from the other two variants of Apatite Apatite CaF [Fluorapatite] and Apatite CaCl [Chlorapatite] Erionite Tiny crystals of Erionite can be damaging to human health Credit Leon Hupperichs under
·Phosphate ore is an important strategic mineral resource The efficient utilization of phosphate resources faces challenges such as low grade of raw ore and difficulty in discharging gangue minerals One of the key problems to be solved urgently in the reverse flotation of phosphate ore is the effective depression of apatite However research on the
Dust was a common air quality problem throughout all mining activities; fluoride emissions and radon gas emission were also serious problems Toxic metals and radioactive elements of significant human health problems were Pb Cd Hg Cr As U Th and Ra atmosphere and human food chain 5 6 Apatite is the dominant mineral in phosphate ores
·Froth flotation of apatite is one of the main methods of mining the mineral from host ores [61] Selecting the correct reagents is important in optimizing the process [91] in contrast investigated five samples of apatite from different areas of the Salitre deposit in Brazil due to problems with processing of the apatite They found IEP
Seven decades of mining activity on the Khibiny apatite nepheline ore deposits and current large excavation volumes have resulted in elevated concentrations of total dissolved solids and metals in various waters near the mines To assess the major sources of pollution inputs and fate of pollutants in watercourses draining the mine workings snow cover surface waters and
·Mining companies will need to be proactive in dealing with geopolitical issues such as trade wars resource nationalism and political upheaval This will require a multi faceted approach that actively engages with suppliers governments and trade bodies to ensure that the long term supply chain is sufficiently robust
·Phosphorus is obtained from the mining of phosphate rocks mainly the mining of minerals belonging to the apatite group; these ores represent a limited and non renewable resource [] The composition of apatite alongside its complex substitution scheme affects not only the obvious phosphate grade attainable in a concentrate but also solubility reactivity apatite
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