KENYAITE AND MAGADIITE IN THE SOUTHERN URALS [PDF]
White dense kenyaite (Na2 Si22O41(OH)8 • 6H2 O) nodules were found by enthusiasts in dumps of exploration mines of the Rechnoe cacholong occurrence in the Adamovsky district of the Orenburg region.
M.V. Shtenberg +4 more
doaj
Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]
Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum +5 more
core +3 more sources
MAGNESIOHÖGBOMITE (MG,FE2+,ZN)8 (AL,TI,FE3+)20O38(OH)2 FROM ILMENOGORSKY-VISHNEVOGORSKY COMPLEX [PDF]
Rare mineral magnesiohögbomite was found in spinel-sapphirine hornblendites and titanomagnetite clinopyroxenites, which compose the large blocks in tectonic sheets of serpentinites among gneisses of the Kyshtym sequence (Ilmenogosrky-Vyshnevogorsky ...
V.G. Korinevsky +4 more
doaj
CLINTONITE CА(MG, AL, FE)3 [AL3 SIO10](OH)2 FROM THE ILMENO -VISHNEVOGORSKY COMPLEX OF THE SOUTH URALS [PDF]
Clintonite is a rare type of brittle mica (calcium analogue of phlogopite). Its new find in Urals is described. Clintonite is a part of garnet clinopyroxenite, composing a block-inclusion in a serpentinite melange.
V.G. Korinevsky +4 more
doaj
INTERGROWTHS OF PLATINUM GROUP MINERALS FROM THE MIASS PLACER ZONE (SOUTH URALS) AND THEIR PRIMARY SOURCES [PDF]
Twenty four platinum group minerals (PGMs) were found in the Kialim and Maly Iremel gold placers of the Miass placer zone, South Urals. Rhodarsenite, bowieite, cuprorhodiste, and xingzhongite(?) were found in the Urals for the first time.
V.V. Zaykov +4 more
doaj
COMPOSITION AND MORPHOLOGY OF CRYSTALS OF PLATINUM GROUP MINERALS FROM PLACERS OF THE SOUTH URALS [PDF]
Crystals of platinum group minerals (PGMs) of the Os–Ir–Ru and Pt–Fe systems from placer deposits of the South Urals are zonal and relatively homogenous in composition and can contain inclusions of PGE sulfides, arsenides, sulfarsenides, and antimonides.
V.V. Zaykov +4 more
doaj
VOLBORTHITE AND STRENGITE – RARE MINERALS FROM THE MEDNORUDYANSKOE MALACHITE DEPOSIT (URALS) [PDF]
History of volborthite and strengite findings in Russia and the World is discussed. The chemical composition of these minerals from the Mednorodyanskoe deposit, as well as morphology of volborthite crystals, X-ray pattern of strengite and its IR spectrum
V.I. Popova +4 more
doaj
Ultramafic xenoliths from the Bearpaw Mountains, Montana, USA: evidence for multiple metasomatic events in the lithospheric mantle beneath the Wyoming craton [PDF]
Ultramafic xenoliths in Eocene minettes of the Bearpaw Mountains volcanic field (Montana, USA), derived from the lower lithosphere of the Wyoming craton, can be divided based on textural criteria into tectonite and cumulate groups. The tectonites consist
Abidin, M.S.Z. +11 more
core +2 more sources
Dust-grain processing in circumbinary discs around evolved binaries. The RV Tauri spectral twins RU Cen and AC Her [PDF]
Context: We study the structure and evolution of circumstellar discs around evolved binaries and their impact on the evolution of the central system. Aims: To study in detail the binary nature of RUCen and ACHer, as well as the structure and mineralogy ...
Dominik, C. +4 more
core +9 more sources
SR-FTiR microscopy and FTIR imaging in the earth sciences
During the last decades, several books have been devoted to the application of spectroscopic methods in mineralogy. Several short courses and meetings have addressed particular aspects of spectroscopy, such as the analysis of hydrous components in ...
Bellatreccia, F. +2 more
core +1 more source

