 | Zhang, Chunguang, Wang, Jun, Feng, Mingshi, Shi, Zhiqiang, Xiang, Fang, Hou, Mingcai, Yang, Shuai, Kneller, Ben, Chen, Hongde (2021) Petrological Composition of the Last Coal Seam in the Longmendong Section before the End-Permian Mass Extinction. Minerals, 11 (11) 1230 doi:10.3390/min11111230 | Journal (article/letter/editorial) | | pyrite. The pyrofusinite and carbon microparticles occurrence modes could have been formed during wildfires...adjacent areas. The β-tridymite occurrence modes and the high proportions and occurrence modes of magmatic...accumulation period. The chamosite and quartz occurrence modes suggest that they primarily precipitated...nearby Emeishan basalt. The pyritic coal balls occurrence modes in the C1 coal seam are likely the result...H–L) oil immersion. 4.2. Mineral Occurrence Modes 4.2. Mineral Occurrence Modes The XRD analysis (Figure |  | Volkov, A. V., Savva, N. E., Sidorov, A. A., Kolova, E. E., Chizhova, I. A., Alekseev, V. Yu. (2015) The Agan epithermal gold-silver deposit and prospects for the discovery of high-sulfidation mineralization in northeast Russia. Geology of Ore Deposits, 57 (1) 21-41 doi:10.1134/s1075701515010067 | Journal (article/letter/editorial) | | quantitative spectral analysis for samples from the Agan occurrence were processed using factor analysis, the principal...were distinguished during prospecting. Rhombic tridymite crystals, at first erro neously determined as...quartz veins and zones of silicification and tridymite development with subeconomic Au contents <1.0...and dickite. Subordinate minerals are calcite, tridymite, adularia, rutile, jarosite, zeolite, chlorite...consist of finegrained quartz with dispersed tridymite and small relicts of argillically altered host |  | | Book | | Earth and other planets, of the composition, occurrence and transformation of various rocks required...(Institute of Planetology, University of Münster, Germany) acquainted with some parts of the primary text...Mikhail S. Mashchak and Mikhail V. Naumov Mode of Occurrence and Composition of Impact-Generated and Impact-Modified...Ljutkevitch EI, Frukht DL (1954) On possible occurrence of a buried ridge of the platform basement in...the above group by a permanent clinopyroxene occurrence and predominant mesocratic composition. Contents |  | | Book (edition) | | Mineralogy. The study of minerals, their formation, occurrence, properties, composition, and classification...observations of copper-smelting furnaces at Mansfeld, Germany, and found that molten materials often divided...Finland New Zealand Minnesota East Greenland Germany Si Ti Al Fe Mn Mg Ca Na O 19.50 0.00 0.00 0.86...Finland New Zealand Minnesota East Greenland Germany SiO2 TiO2 Al2O3 Fe2O3 FeO MnO MgO CaO Na2O 41...Mafic Sill Fe-Gabbro Fe-Formation Location: Germany Burma Finland New Zealand Minnesota East Greenland |  | | Report (issue) | | statements 212 Native elements 212 Graphite Occurrence 212 Alterations 21 2 The sulphides 212 ...marcasite 213 Occurrence 213 Alterations 214 216 fluorides Fluorite _ 216 Occurrence 216 Alterations...Alterations 216 The oxides 217 21 7 Quartz Occurrence 21 7 CONTENTS. MINERALS CHAPTER V. Section...Modifications 220 Tridymite Occurrence 220 Modifications 220 221 Opal Occurrence 221 Modifications...223 Corundum 223 Occurrence 223 Alterations 223 Hematite 225 Occurrence 225 Alterations 226 |  | | Book (edition) | | observations of Cu-smelting furnaces at Mansfeld, Germany, and found that molten materials often divided...Finland New Zealand Minnesota East Greenland Germany 19.50 0.00 0.00 0.86 0.00 34.88 0.00 0.00 45.42...Finland New Zealand Minnesota East Greenland Germany Na2 O 41.72 0.00 0.00 0.00 1.11 0.00 57.83 0...Finland New Zealand Minnesota East Greenland Germany Si4 + 0.978 0.000 0.000 0.000 0.022 0.000 2.021...nearly 100% forsterite (Mg SiO while that from Germany is nearly 100°/o fayalite (Fe SiO The other olivines |  | | Book | | System of mineral classification 8 Origin and occurrence of minerals 8 Associated minerals 11 Properties...Lastly, data on the genesis, associated minerals, occurrence and application are included. The tabulated section...the minerals in this book as well. Origin and occurrence of minerals In order to gain some knowledge of...certain mineral deposit or rock, and eliminate the occurrence of some others. Examples of associated minerals...brookite (353) - anatase (352); quartz (534) - tridymite (461) - cristobalite (462); sphalerite (181) - |  | | Report (issue) | | ................. . 140 100 Features of the occurrence of minerals .. ~ .. . 140 100 Gangue minerals......... ~ .. ~ ............ . 149 107 General occurrence.-............. ·........ . 150 111 Ores in igrieous...202 Concentration of gold during oxidation. 176 Occurrence __ ....... __________ .. Opex property ........205 mine·--------------------------------- 177 Occurrence ...... ____ ... __ . _. _....... . 177 Situation...193 Geology .............. '............ . 219 Occurrence of the ore ....... -........ . 193 Production |
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