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Garnet-amphibole miaskites of the Ilmenogorsky miaskite massif (Southern Urals): Mineralogy and geochemistry

open access: yesЛитосфера, 2020
Research subject. This paper presents original findings about textural-structural, mineralogical, petrological, and geochemical features of the garnet-amphibole miaskites (firstes) of the Ilmenogorsky miaskite massif.Materials and methods. The microprobe
A. B. Nemov
doaj   +1 more source

Application of artificial intelligence in the analysis of asbestos fibers

open access: yesFrontiers in Public Health
Automated asbestos fiber detection and identification has been the goal of asbestos microscopists for decades. The advent of inexpensive memory, fast digital processing, machine learning, and microscope automation provide the enabling platform for ...
Richard Lee   +5 more
doaj   +1 more source

Uralitization – An example from Kuusamo, Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1977
The course of events as well as the chemical changes associated with the alteration of clinopyroxenes to uralite have been studied from diabases in Kuusamo, Finland.
R. Piispanen, T. Alapieti
doaj   +1 more source

Thermal expansivity and dehydrogenation in amphiboles [PDF]

open access: yesActa Crystallographica Section A Foundations of Crystallography, 2009
Few data exist on the thermal expansivity of amphiboles, and they refer to rather exotic compositions which either are not useful to model geologic processes or undergo phase transition. Indeed, amphiboles are not crystal-chemically inert during annealing.
Roberta Oberti (2)   +3 more
openaire   +2 more sources

The Capability of Amphibole in Tracing the Physicochemical Processes of Magma Mixing

open access: yesGeophysical Research Letters
This study explores the capability of amphibole in tracing the physicochemical process of magma mixing through spatially associated gabbros, mafic microgranular enclaves (MMEs) and granodiorites from central Tibet.
Mingjian Li   +6 more
doaj   +1 more source

Compositional Zoning in Amphibole from Amphibole Bearing Parageneses of West Psunj (Croatia): Evidence for Progressive Metamorphism?

open access: yesGeologia Croatica, 2010
Amphibole bearing parageneses from the western part of Mt. Psunj (Croatia) record evidence of prograding metamorphism. Opticaland microprobe analyses, together with thermobarornetric evaluationson amphibole bearing parageneses, show a zonation with Si ...
Dražen Balen   +2 more
doaj   +1 more source

Negative Frictional Healing in Icelandic Geothermal (IDDP‐2) Core Samples: Potential Implications for Detachment‐Fault Mechanics

open access: yesGeochemistry, Geophysics, Geosystems
Detachment faults in mid‐ocean ridge settings accommodate tectonic extension. These faults are potentially weakened by alteration through phyllosilicate‐ and amphibole‐mineral formation.
Barnaby Fryer   +8 more
doaj   +1 more source

Deep Crustal Magma‐Water Interaction During Oceanic Core Complex Termination of the Godzilla Megamullion in the Parece Vela Basin

open access: yesGeochemistry, Geophysics, Geosystems
Oceanic Core Complexes (OCCs) in back‐arc basins are not as thoroughly investigated, and their termination processes remain poorly understood. The Godzilla Megamullion is the largest known ceased OCC on Earth, yet magmatic and hydrothermal records from ...
Han‐Tao Chi   +3 more
doaj   +1 more source

Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity

open access: yesGeophysical Research Letters
The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated.
Kewei Shen   +7 more
doaj   +1 more source

Kôzulite, an Mn-rich alkali amphibole

open access: yesActa Crystallographica Section E, 2010
The crystal structure of kôzulite, an Mn-rich alkali amphibole with the ideal formula NaNa2[Mn42+(Fe3+,Al)]Si8O22(OH)2, trisodium tetramanganese iron/aluminium octasilicate dihydroxide, was refined from a natural specimen with composition (K0 ...
Madison C. Barkley   +2 more
doaj   +1 more source

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