 | | Journal (article/letter/editorial) | | western ore field, Ordzhonikidze area, Shevchenko quarry (Varentsov et al., 1997). 1—Miocene clays, limestone...todorokite (10%), quartz (<5%). Aleksandrovskii quarry, eastern face; 3—Sample 2/3. Manganese carbonate...clinoptilolite (10 – 15%), quartz (10%). Aleksandrovskii quarry, eastern face; 4—Sample 2/8. Oxyhydroxide ore:...pyrolusite (5 – 10%), quartz (to 5%). Aleksandrovskii quarry, eastern face; 5—Sample n-91-23. Mn-oxidized ore...mixed-layered smectite-mica phase (<5%). Shevchenko quarry; 6—Sample n-91-13a. Mn carbonate – manganite ore |  | | Report (chapter) | | area, adjacent to the coasts of southern Denmark, Germany, Poland and Lithuania, was affected by rapid variations...basins). Other terrigenic minerals, such as calcite, manganic calcite, dolomite, montmorillonite, nontronite...V. A., Baturin, G. N., Leipe, T., Bahlo, R. & Bonacker, P. 1997. Environments formation of ferromanganese |  | | Journal (article/letter/editorial) | | manganese is commonly present as a constituent of calcite, dolomite, ankerite, and kutnahorite. During metamorphism...V.A., Baturin, G.N., Leipe, T., Bahlo, R., and Bonacker, P., 1997, Environments of formation of ferromanganese...and the timing of Precambrian aragonite seas and calcite seas: Geology, v. 31, p. 785–788. Heising, S., |  | | Journal (article/letter/editorial) | | vein Mineral abbreviations: Brt = barite, Cal = calcite, Cpt = cryptomelane, Gt = goethite, Hem = hematite...A., Bathurin, G.N., Leipe, T., Bahlo, R., and Bonacker, P., 1997a, Environments of formation of ferromanganese |  | | Report (volume) | | BERNHARD BUHN Justus-Liebig Universit~it, Giessen, Germany and SOMNATH DASGUPTA Jadavpur University, India...ZHAMOIDA,V. A., BATURIN, G. N., LEIPE, T., BAHLO, R. BONACKER,P. Environments of formation of ferromanganese...Universitdt, Senckenbergstrasse 3, D-35390 Giessen, Germany 4 Department of Geological Sciences, Jadavpur University...polymetallic oxides) meetings in Germany, the UK and India. The IGCP 318 session in Germany was held in Freiberg...and Mn sulphide (alabandite). Barite, fluorite, calcite and quartz are characterisic accessory minerals |  | | Book | | FeNi (Mg,Fe)2SiO4 (Mg,Fe)2Si2O6 Lithogenous Calcite Aragonite Opal Francolite Barite Celestite CaCO3;...oceans. Aragonite is ,1.45 times more soluble than calcite (Morse and Mackenzie, 1990), so aragonitic oozes...averages around 3,000 m (Berger, 1978), whereas the calcite compensation depth (CCD) ranges from 5,000 –6,000...ridge crests and other topographic highs. Although calcite and aragonite are both made up of calcium carbonate...Bischoff et al., 1987; Mackenzie et al., 1983). Calcite also may contain minor substituents such as Sr2þ |  | | Book | | of the Elements H. Palme Universität zu Köln, Germany and A. Jones Université Paris Sud, France 1.03...phase, calcite Olivine, serpentine, saponite, minor magnetite, FeS, pentlandite, pyrrhotite, calcite Amorphous...Smectite, fayalitic olivine, forsterite, enstatite, calcite, magnetite Fayalitic olivine, amorphous material...et al., 1992). However, rims around grains of calcite, tochilinite and other alteration products may...fine-grained olivine Fa5 – 38 and low-calcium pyroxene, calcite, and magnetite (Alexander et al., 1989a). Magnetite |
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Bonacker quarry, Gedern, Wetteraukreis, Darmstadt, Hesse, Germany