Results 101 to 110 of about 41,651 (167)

Location, Location, Location: Monazite Behaviour During UHT Metamorphism and Melt Crystallization

open access: yesJournal of Metamorphic Geology, Volume 44, Issue 2, Page 158-175, February 2026.
ABSTRACT Monazite is a robust mineral for recording the suprasolidus evolution of migmatites and granulites. However, monazite commonly has diverse compositions and yields variable dates in a single sample; understanding the controls on monazite behaviour and composition during partial melting and melt crystallization are not always straightforward ...
Chris Yakymchuk   +2 more
wiley   +1 more source

P‐T‐t‐d Evolution of Low‐Grade Metamorphic Xenotime, Eastern Alps (Austria)

open access: yesTerra Nova, Volume 38, Issue 1, Page 65-76, February 2026.
ABSTRACT In situ LA‐ICP‐MS U‐Pb dating of xenotime was used to establish the age of low‐grade metamorphism in Permian metasediments of the Austroalpine Unit (Eastern Alps, Austria). Complexly zoned xenotime in chloritoid‐bearing metasedimentary samples possesses distinct MREE‐rich domains. In the eastern sample, this domain yielded a date of c. 135 Ma,
M. S. Hollinetz   +4 more
wiley   +1 more source

The effect of microorganisms on processes of weathering primary minerals [PDF]

open access: yes
Microflora and microorganism effects on weathering, decomposition, and secondary synthesis of primary ...
Glazovskaya, M. A.
core   +1 more source

Pegmatites of the Mokromoskovsk granite pluton

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія
Introduction. The Mokromoskovsky pluton is composed of light gray granites and dark gray granodiorites. Light gray granites are composed of oligoclase (35-40%), microcline (20-25%), quartz (30-35%), and biotite (2-5%).
Yuliia Lytvynenko
doaj   +1 more source

Multiseasonal and geobotanical approach in remote detection of greisenization areas in the Serra da Pedra Branca Granite, Goias State, Brazil [PDF]

open access: yes
Multiseasonal analysis of LANDSAT multispectral images in CCT format permitted the mapping of lithologic facies in the Pedra Branca Granite, using geobotanical associations, which occur in the form of variations in the density of cerrado vegetation, as ...
Almeidafilho, R., Parada, N. D. J.
core   +1 more source

Análisis del tratamiento en medio ácido de partículas de pizarra

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2002
Slate particles were treated in liquid acid medium. The results were analyzed as a function of the disolved ions and specific surface area values. Infrared spectroscopy (FT-IR) and X- ray difraction were also used in this study.
Rodríguez, María A.   +4 more
doaj  

Eco-friendly synthesis and catalytic activity of Cu nanoparticles deposited on expanded muscovite to reduce organic pollutants

open access: yesResults in Surfaces and Interfaces
Supported metal nanoparticles on various substrates have demonstrated high activity efficiency, resistance to aggregation, and ease of recyclability. In this study, the expansion of natural muscovite was investigated through a process involving acidic ...
Abduraboh Alraae   +6 more
doaj   +1 more source

Mineral Chemistry and Pressure and Temperature Estimates of Metasedimentary Rocks of the Araxá Group in the Region of Morrinhos, South of Goiás State [PDF]

open access: yesGeologia USP. Série Científica, 2011
In the Morrinhos region, Goiás state, Brazil, the rocks of the Araxá Group have mineral assemblages related to themetamorphic peak which occurred in this region and is typical of the amphibolite facies (kyanite zone).
Guillermo Rafael Beltran Navarro   +4 more
doaj  

Preliminary site report for the 2005 ICDP-USGS deep corehole in the Chesapeake Bay impact crater [PDF]

open access: yes, 2006
First report for the ICDP-USGS 1.7-km-deep corehole drilled into the central part of the Chesapeake Bay impact crater during ...
Browning, J. V.   +15 more
core  

Minerals in Afghanistan : rare-metal deposits [PDF]

open access: yes, 2007
In Afghanistan rare metals (lithium, caesium, tantalum and niobium) occur in three main deposit types: pegmatites, mineralised springs and playa-lake sediments (Figure 1).
Benham, Antony John, Coats, Stan
core  

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