作者: Facet-Joints 時(shí)間: 2025-3-21 20:58
Die Ermittlung des FirmenwertesThe continuation of a systematic electron microprobe study of the platinum-group minerals occurring in ore samples from the Ivrea-Verbano basic complex (Western Italian Alps), has led to a better definition of the range of solid solution in the NiTe.-PdTe.-PtTe. ternary field.作者: 協(xié)定 時(shí)間: 2025-3-22 01:15 作者: Madrigal 時(shí)間: 2025-3-22 07:26
https://doi.org/10.1007/978-94-009-1353-0Mafic; chemistry; dyke; geochemistry; geology; intrusion; lithosphere; mineral; mineralogy; mining; mobility; n作者: 結(jié)構(gòu) 時(shí)間: 2025-3-22 09:35 作者: LEER 時(shí)間: 2025-3-22 16:49 作者: LEER 時(shí)間: 2025-3-22 19:39
The Potential for Hydrothermal Platinum Deposits similar to that of gold, the ratio of p1atinum:gold recovered by mining operations is about 1:20. The shortfall is in platinum recovered from mineral deposits in which the ore components have been transported in aqueous solutions at temperatures below 400°C.作者: gustation 時(shí)間: 2025-3-22 22:31 作者: 他一致 時(shí)間: 2025-3-23 03:07 作者: 使饑餓 時(shí)間: 2025-3-23 08:33 作者: CURB 時(shí)間: 2025-3-23 10:50
Einige besondere Bestimmungsanhalte,in representative samples (50g). The procedure is based on the established nickel sulphide bead method, with lithium tetraborate in the flux and a fusion temperature of 1000°C. When the analytical technique was tested by measuring the PGE in reference materials SARM 7 and PTC-1, the data agreed with作者: irritation 時(shí)間: 2025-3-23 16:56 作者: 爆米花 時(shí)間: 2025-3-23 20:08
https://doi.org/10.1007/978-3-662-26274-0ed, mineral species, and their very high financial value. These factors have resulted in the need for an analytical method offering . of a . allied with an . technique. For many years these criteria were satisfied by fusion of large sample aliquots followed by gravimetric measurement of the various 作者: 地名表 時(shí)間: 2025-3-24 01:56 作者: 難取悅 時(shí)間: 2025-3-24 02:46
https://doi.org/10.1007/978-3-642-90696-1Ta, etc., is enhanced by substituting a screen-type X-ray film (Fuji RX) for the nuclear research plates (Ilford K2) used in earlier studies. This X-ray film offers equivalent resolution to the nuclear research plates but is less easily damaged during handling and both reduces the cost and increases作者: 傲慢人 時(shí)間: 2025-3-24 07:15 作者: coalition 時(shí)間: 2025-3-24 12:09
Pathologie des Scheideninhalts. Fluorsolution is necessary for mobilization and differentiation in oxide zones. Previous suggestions concerning this complex chemistry involving chloride ion are applicable only in very unusual circumstances. It is clear that the natural ligand set available for complex formation is severely restricted. 作者: 發(fā)起 時(shí)間: 2025-3-24 16:58 作者: 有幫助 時(shí)間: 2025-3-24 19:32
Enzyklopaedie der Klinischen Medizin similar to that of gold, the ratio of p1atinum:gold recovered by mining operations is about 1:20. The shortfall is in platinum recovered from mineral deposits in which the ore components have been transported in aqueous solutions at temperatures below 400°C.作者: 撫慰 時(shí)間: 2025-3-25 02:06
,Bemerkungen zum Begriff ?Lumbago“,up minerals (PGM). One method for presenting noble metal, Ni and Cu data focuses on the sulphide control by recalculating the data to 100% sulphides and presenting the data chondrite normalized. The relative importance of the influence of sulphides, chromite, olivine and PGM on the noble metals, Ni 作者: 簡(jiǎn)潔 時(shí)間: 2025-3-25 07:20 作者: 平淡而無(wú)味 時(shí)間: 2025-3-25 11:08
https://doi.org/10.1007/978-3-663-08385-6inen, transient sulphide separation gave rise to sulphidic PGE mineralizations (Pd-Pt- Au) in the lower zone and upper main zone. PGE, without visible sulphides, occur in Lower Chromitites (Pd-Pt) in the lower zone, in ultramafic pegmatoid pipes (Pt) in the main zone, and in the Upper Chromitite lay作者: Bone-Scan 時(shí)間: 2025-3-25 14:37 作者: 訓(xùn)誡 時(shí)間: 2025-3-25 19:06 作者: Friction 時(shí)間: 2025-3-25 20:33 作者: 拉開(kāi)這車床 時(shí)間: 2025-3-26 01:41 作者: 尖牙 時(shí)間: 2025-3-26 06:43
Exploration for Platinum: a Contemporary Viewpointtuousness of exploration geologists—their herd instinct, their inability to concentrate on more than one thing at a time and their slender grasp on economic realities. From the other point of view it is a classic case of market forces doing their thing—investment rushing to meet opportunity and plug作者: 黑豹 時(shí)間: 2025-3-26 09:25
The Platinum Market: Recent History and Future Developmentss upon which we depend for our standard of living. These processes range from the production of basic fuels, chemicals and materials, through to high-technology applications in the protection of the environment and the treatment of pernicious disease. As developing countries emerge they too find a g作者: EXPEL 時(shí)間: 2025-3-26 15:02 作者: 乳汁 時(shí)間: 2025-3-26 20:44 作者: Strength 時(shí)間: 2025-3-27 00:48
The Potential of Fire-assay and ICP-MS for the Determination of Platinum-Group Elements in Geologicaed, mineral species, and their very high financial value. These factors have resulted in the need for an analytical method offering . of a . allied with an . technique. For many years these criteria were satisfied by fusion of large sample aliquots followed by gravimetric measurement of the various 作者: 孤獨(dú)無(wú)助 時(shí)間: 2025-3-27 01:37 作者: 擴(kuò)張 時(shí)間: 2025-3-27 09:09 作者: 喪失 時(shí)間: 2025-3-27 10:36
Solubility and Transport of Platinum-Group Elements in Hydrothermal Solutions: Thermodynamic and Phygical fluids such as chloride, hydroxide, bisulphide, polysulphide, thiosulphate or ammonia complexes, depending on pH, fO., temperature and lignad concentration..In saline fluids (i. e. ΣCl. > 1·0 m) at 25°C, Pt and Pd are soluble as . and ., at a level of 10 ppb or greater, only in very acidic and作者: 憂傷 時(shí)間: 2025-3-27 17:15
New Mechanisms for the Mobilization of the Platinum-Group Elements in the Supergene Zonesolution is necessary for mobilization and differentiation in oxide zones. Previous suggestions concerning this complex chemistry involving chloride ion are applicable only in very unusual circumstances. It is clear that the natural ligand set available for complex formation is severely restricted. 作者: Adornment 時(shí)間: 2025-3-27 19:42
Spinel Non-stoichiometry as the Explanation for Ni-, Cu- and PGE-enriched Sulphides in Chromititesin the difference between the PGE concentrations in chromitite-hosted and Merensky-type PGE ores and the concentrations in magmatic sulphides that are less enriched in PGE. The very high concentrations of Ni and Cu also characteristic of chromititehosted sulphides are not explicable in this way. Thi作者: NUDGE 時(shí)間: 2025-3-28 01:30
The Potential for Hydrothermal Platinum Deposits similar to that of gold, the ratio of p1atinum:gold recovered by mining operations is about 1:20. The shortfall is in platinum recovered from mineral deposits in which the ore components have been transported in aqueous solutions at temperatures below 400°C.作者: 性學(xué)院 時(shí)間: 2025-3-28 05:03 作者: 偏見(jiàn) 時(shí)間: 2025-3-28 09:01
Noble Metal Geochemistry of some Ni-Cu Deposits in the Sveconorwegian and Caledonian Orogens in Norw far the richest deposits are: F??y averaging 1790 ppb Pt and 4760 ppb Pd, and Lillefiellklumpen averaging 1800 ppb Pt and 3070 ppb Pd. Both are small massive sulphide bodies, the former associated with late stage dykes within the Karm?y ophiolite while the latter is associated with MORB-type tholei作者: 諄諄教誨 時(shí)間: 2025-3-28 12:11 作者: arabesque 時(shí)間: 2025-3-28 17:07 作者: frozen-shoulder 時(shí)間: 2025-3-28 21:09
Nickel-Copper and Precious Metal Mineralisation in the Caledonian Mafic and Ultramafic Intrusions ofnclude xenolithic, contaminated and granular gabbroic varieties. They were emplaced 489 ± 17mya and postdate the regional foliation in the country rock metasediments, but are themselves locally deformed by a set of regional ductile shear zones.作者: 一夫一妻制 時(shí)間: 2025-3-28 23:15 作者: 駭人 時(shí)間: 2025-3-29 03:49
Platinum-Group Elements and Au Distribution in Ni Arsenide-Chromite Veins from the Rifo-Betic Lherzoeni-Bousera) there are about 50 veins of a very peculiar Ni-Cr mineralization including an association of niccolite and Zn-V-rich chromite with accessory arsenides, sulphoarsenides, sulphides and graphite; the gangue minerals are orthopyroxene or cordierite. They are associated with pyroxenite dikes作者: Exclaim 時(shí)間: 2025-3-29 11:18 作者: 極深 時(shí)間: 2025-3-29 14:07 作者: DALLY 時(shí)間: 2025-3-29 16:37 作者: 易彎曲 時(shí)間: 2025-3-29 20:48
Spinel Non-stoichiometry as the Explanation for Ni-, Cu- and PGE-enriched Sulphides in Chromitites, if the fS. is buffered to that of sulphide cooling as a closed system, Fe-Ni-S sulphide containing 20 mole % NiS in equilibrium with chromite of the composition of the UG-2 can lose Fe to the chromite, using a high proportion of the available vacancies in the chromite at 1150°C. Depending on the m作者: 船員 時(shí)間: 2025-3-30 01:06
The Use of Mantle Normalization and Metal Ratios in Discriminating between the Effects of Partial Merelative to Ni and Cu and the metal patterns will have an overall trough shape. Conversely any rocks containing these sulphides will be enriched in noble metals relative to Ni and Cu and the metal patterns will have an arch shape (characteristic of Pt reefs). Chromite-rich rocks tend to be enriched 作者: 煉油廠 時(shí)間: 2025-3-30 04:18
The Significance of Cumulus Chlorapatite and High-temperature Dashkesanite to the Genesis of PGE Minion of sedimentary sulphides triggered the deposition of massive sulphides. PGE occur only in overlying meagre disseminations (Pt-Pd-Au), and reach the highest concentrations in chromite-rich rocks (Os-Pt-Pd) at the roof. The distribution of PGE in these intrusions has an unusual pattern. Disseminat作者: Common-Migraine 時(shí)間: 2025-3-30 09:24 作者: Bother 時(shí)間: 2025-3-30 14:29 作者: 溺愛(ài) 時(shí)間: 2025-3-30 18:18 作者: cataract 時(shí)間: 2025-3-30 22:41
Book 1988loration strategy. The second invited paper gave a valuable view of the industrial uses, market trends and predicted changes in the commercial value of the platinum-group elements from the standpoint of a refining company and supplier. These invited papers are reproduced in this volume and are follo作者: 泛濫 時(shí)間: 2025-3-31 02:49
ves on exploration strategy. The second invited paper gave a valuable view of the industrial uses, market trends and predicted changes in the commercial value of the platinum-group elements from the standpoint of a refining company and supplier. These invited papers are reproduced in this volume and are follo978-94-010-7102-4978-94-009-1353-0作者: 和諧 時(shí)間: 2025-3-31 08:28
Einige besondere Bestimmungsanhalte, that the variations were acceptable. Concentrations of the PGE in the blanks were insignificant compared to those in the samples but high gold blanks may be the source of some variation in the results. A second source of error could be losses during dissolution..It is concluded that, even though th作者: 索賠 時(shí)間: 2025-3-31 10:09 作者: bleach 時(shí)間: 2025-3-31 16:53 作者: 平靜生活 時(shí)間: 2025-3-31 18:59
,Ein System der Schilddrüsenerkrankungen,, if the fS. is buffered to that of sulphide cooling as a closed system, Fe-Ni-S sulphide containing 20 mole % NiS in equilibrium with chromite of the composition of the UG-2 can lose Fe to the chromite, using a high proportion of the available vacancies in the chromite at 1150°C. Depending on the m作者: lesion 時(shí)間: 2025-3-31 22:28 作者: Contracture 時(shí)間: 2025-4-1 04:18
https://doi.org/10.1007/978-3-663-08385-6ion of sedimentary sulphides triggered the deposition of massive sulphides. PGE occur only in overlying meagre disseminations (Pt-Pd-Au), and reach the highest concentrations in chromite-rich rocks (Os-Pt-Pd) at the roof. The distribution of PGE in these intrusions has an unusual pattern. Disseminat作者: 鋼盔 時(shí)間: 2025-4-1 08:44
Walter Panknin,Wolfgang M?hrlinmagma source in a supra-subduction zone (SSZ). The relative roles of primary and secondary fluids in the concentration of the PGE in Shetland are difficult to determine because the chromite-rich lithologies characteristically lie in altered, highly serpentinized zones. Dunites associated with some o作者: 粗糙濫制 時(shí)間: 2025-4-1 10:21
https://doi.org/10.1007/978-3-663-07002-3 the lack of any correlation with the mineralogy, petrography, or geochemical features is most likely an inherited pattern from the mantle sources or percentage of partial melting but might be related to a redistribution in connection with serpentinization and regional metamorphism.作者: malign 時(shí)間: 2025-4-1 16:56 作者: 現(xiàn)暈光 時(shí)間: 2025-4-1 18:33 作者: 聲音刺耳 時(shí)間: 2025-4-2 00:33
The Platinum Market: Recent History and Future Developmentstechnology applications in the protection of the environment and the treatment of pernicious disease. As developing countries emerge they too find a growing need for platinum’s unique combination of intrinsic properties.
