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Platinoids in the Kaalamo Differentiated Massif in the Northern Ladoga Region, Karelia, Russia
Pleiades Publishing Ltd - Tập 59 - Trang 632-641 - 2018
O. B. Lavrov, L. V. Kuleshevich
The Kaalamo massif is located in the Northern Ladoga region, Karelia, on the extension of the Kotalahti Belt of Ni-bearing ultramafic intrusions in Finland. The massif, 1.89 Ga in age, is differentiated from pyroxenite to diorite. Nickel–copper sulfide mineralization with platinoids is related to the pyroxenite phase. The ore consists of two mineral types: (i) pentlandite–chalcopyrite–pyrrhotite a...... hiện toàn bộ
Maucherite from metamorphic-hydrothermal assemblages of the Noril’sk ore field
Pleiades Publishing Ltd - Tập 50 Số 7 - Trang 590-598 - 2008
Yu. D. Gritsenko, Э. М. Спиридонов
Crystal Chemistry of Pyroaurite from the Kovdor Pluton, Kola Peninsula, Russia, and the Långban Fe–Mn deposit, Värmland, Sweden
Pleiades Publishing Ltd - Tập 59 - Trang 652-661 - 2018
E. S. Zhitova, G. Yu. Ivanyuk, S. V. Krivovichev, V. N. Yakovenchuk, Ya. A. Pakhomovsky, Yu. A. Mikhailova
Pyroaurite [Mg6Fe23+ (OH)16][(CO3)(H2O)] from the Kovdor Pluton on the Kola Peninsula, Russia, and the Långban deposit in Filipstad, Värmland, Sweden were studied with single crystal and powder X-ray diffraction, an electron microprobe, and Raman spectroscopy. Both samples are rhombohedral, space group R3̅m, a = 3.126(3), c = 23.52(2) Å (Kovdor), and a = 3.1007(9), c = 23.34(1) (Långban). The powd...... hiện toàn bộ
Zirconium-titanium placers of the Voronezh Anteclise: Types, epochs and factors of formation, and forecast
Pleiades Publishing Ltd - Tập 54 - Trang 60-80 - 2012
A. D. Savko, A. E. Zvonarev, D. A. Ivanov
The early and late Frasnian, Barremian-Aptian, Cenomanian, early Santonian, early Campanian, and Oligocene-Miocene epochs of the formation of various types of zirconium-titanium placers are distinguished in the Voronezh Anteclise. The factors of their formation are considered, and a forecast of prospecting has been made. Lower Frasnian sedimentary rocks occur in the southeast, where the placers ar...... hiện toàn bộ
On the centennial of the birth of professor Dmitrii Gavrilovich Sapozhnikov
Pleiades Publishing Ltd - Tập 51 Số 5 - Trang 422-424 - 2009
N. P. Laverov, Н.С. Бортников, В. И. Величкин, Yu. G. Safonov, V. I. Kazansky, V. N. Kholodov, I. A. Kondrat’eva, Б. А. Богатырев, Yu. Yu. Bugel’sky, V. V. Zhukov, И. В. Муравьева, Vadim Novikov, A. D. Slukin
Langbeinite-Group Minerals and Vanthoffite from Fumarole Exhalations of the Tolbachik Volcano (Kamchatka)
Pleiades Publishing Ltd - Tập 65 - Trang 827-846 - 2024
M. O. Bulakh, I. V. Pekov, N. N. Koshlyakova, S. N. Britvin, M. A. Nazarova
In this paper, we provide characteristics of sulfates of exhalation origin—langbeinite K2Mg2(SO4)3, two modifications of calciolangbeinite K2Ca2(SO4)3 (new data), and vanthoffite Na6Mg(SO4)4 (first mineralogical data for this genetic type)—from active fumaroles of the Tolbachik volcano in Kamchatka. These minerals are associated with anhydrous copper sulfates and arsenates, minerals of the aphthit...... hiện toàn bộ
Optimization of the garnet-biotite geothermometer: Part II. Calibration equations and accuracy of the estimation
Pleiades Publishing Ltd - Tập 53 - Trang 543-557 - 2012
Yu. L. Gulbin
Calibrations of the garnet-biotite geothermometer are considered with allowance for the effect of the nonideality of the coexisting garnet and biotite upon K D . The calibrations based on the model of an asymmetric subregular Prp-Alm-Grs-Sps solid solution with W − ...... hiện toàn bộ
Oxides of the Pyrochlore Supergroup from a Nonsulfide Endogenic Assemblage of Pb–Zn–Sb–As Minerals in the Pelagonian Massif, Macedonia
Pleiades Publishing Ltd - Tập 60 - Trang 717-725 - 2019
D. A. Varlamov, V. N. Ermolaeva, S. Jančev, N. V. Chukanov
The specific features of the chemical composition, isomorphism, and zoning have been studied for pyrochlore supergroup minerals (PSM) from metasomatic rocks of ore occurrence no. 9 (Nezilovo, Pelagonian Massif, Republic of Macedonia). Ore occurrence no. 9 has an unusual nonsulfide association of chalcophile elements: Zn, As, Sb and Pb. Pyrochlore supergroup minerals crystallized at all stages of m...... hiện toàn bộ
Neotectonic stage in the formation of the Khokhlovskoe uranium deposit, eastern Transural region: Structural, hydrochemical, mineralogical, and geochemical formation conditions
Pleiades Publishing Ltd - - 2013
С. Ф. Винокуров, V. Yu. Prokof’ev, V. I. Malkovsky, Yu. M. Dymkov, А. В. Чугаев, М. В. Нестерова
Avdoninite, K2Cu5Cl8(OH)4 · H2O, a new mineral species from volcanic exhalations and the technogenic zone at volcanic-hosted massive sulfide deposits
Pleiades Publishing Ltd - - 2007
Н. В. Чуканов, Mikhail N. Murashko, A. E. Zadov, A. F. Bushmakin
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