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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
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...
Maucherite from metamorphic-hydrothermal assemblages of the Noril’sk ore field
Pleiades Publishing Ltd - Tập 50 Số 7 - Trang 590-598 - 2008
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
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...
Zirconium-titanium placers of the Voronezh Anteclise: Types, epochs and factors of formation, and forecast
Pleiades Publishing Ltd - Tập 54 - Trang 60-80 - 2012
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...
On the centennial of the birth of professor Dmitrii Gavrilovich Sapozhnikov
Pleiades Publishing Ltd - Tập 51 Số 5 - Trang 422-424 - 2009
Langbeinite-Group Minerals and Vanthoffite from Fumarole Exhalations of the Tolbachik Volcano (Kamchatka)
Pleiades Publishing Ltd - Tập 65 - Trang 827-846 - 2024
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...
Optimization of the garnet-biotite geothermometer: Part II. Calibration equations and accuracy of the estimation
Pleiades Publishing Ltd - Tập 53 - Trang 543-557 - 2012
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 − Grt (after Ganguly et al. (1996) and
Holdaway (2000) and taking into account the experimental data published by
Perchuk et al. (1983))...
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
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...
Tổng số: 715
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