Results 71 to 80 of about 849 (144)

High P‐T Sound Velocities of Amphiboles: Implications for Low‐Velocity Anomalies in Metasomatized Upper Mantle

open access: yesGeophysical Research Letters
Metasomatized mantle xenoliths containing hydrous minerals, such as amphiboles, serpentine, and phlogopite, likely represent the potential mineralogical compositions of the metasomatized upper mantle, where low seismic velocities are commonly observed ...
Wen‐Yi Zhou   +5 more
doaj   +1 more source

The Petrogenesis and Geological Implications of the Sanggeda Gabbros, Southern Tibet: Insights from the Amphibole Crystal Population

open access: yesApplied Sciences
Amphibole is an important mineral during the differentiation of arc magmas but rarely as a phenocryst in arc lavas or eruptive pyroclastic rocks. The Sanggeda complex, intruded into the ophiolite of the Indus–Yarlung Zangbo Suture Zone (IYZSZ), Zedong ...
Xiumin Jiang, Zhaohua Luo, Xiao Liu
doaj   +1 more source

Mineralogical features of amphibole in the Mashhad amphibole-peridotites [PDF]

open access: yesIranian Journal of Crystallography and Mineralogy, 2017
kourosh Mohammadiha   +3 more
openaire   +1 more source

Mineral chemistry, petrography and crystallization conditions of the Middle Eocene Kazıkbeli Pluton (Eastern Pontides, NE Türkiye)

open access: yesBulletin of the Mineral Research and Exploration
The Eastern Pontides host a diverse suite of plutonic rocks spanning a wide range of ages and compositions. Among these, the Middle Eocene Kazıkbeli pluton, located in the Kürtün districtof Gümüşhane, stands out due to its distinctive petrological ...
Cem Yücel   +3 more
doaj   +1 more source

COMPOSITIONAL AND PETROGENETIC FEATURES OF SCHISTOSE ROCKS OF IBADAN AREA, SOUTHWESTERN NIGERIA

open access: yesEarth Sciences Research Journal, 2009
Amphibole and quartz schist which occur in association with migmatite gneiss, granitic gneiss and Pan African Older Granitebodies around Ibadan area, southwestern Nigeria, were studied with a view to elucidate their compositional characteristics andtheir
Oluwatoke O.O.   +2 more
doaj  

Assessment of asbestos exposure in Kyrgyzstan through analysis of raw and processed materials, air samples and human lung tissue

open access: yesScientific Reports
Asbestos still represents a major public health problem on a global scale. In Central Asia chrysotile is still mined and used, claiming that it is safer with respect to amphibole asbestos within certain concentrations.
Zhyldyz Kurzhunbaeva   +14 more
doaj   +1 more source

Amphibole reaction rims record shear during magma ascent

open access: yesNature Communications
Mineral reaction textures are fundamental archives of geological change. Amphibole reaction rims are among the most widely used to reconstruct pre-eruptive magmatic conditions, traditionally interpreted through changes in pressure, temperature and melt ...
Paul A. Wallace   +9 more
doaj   +1 more source

Early Cretaceous Surtseyan volcanoes of the Baño Nuevo Volcanic Complex (Aysén Basin, Eastern Central Patagonian Cordillera, Chile)

open access: yesGeologica Acta, 2010
Tens of Surtseyan tuff cones are exposed in the Río Coichel valley, between Ñireguao and Estancia Baño Nuevo (Southern Chilean Andes). The Early Cretaceous products of the submarine eruptions rest on, or are interbedded with, shallow marine sandstones of
A. DEMANT   +3 more
doaj  

Triclinic amphibole

open access: yesEuropean Journal of Mineralogy, 1991
Walter V. Maresch   +4 more
openaire   +1 more source
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Amphiboles: Crystal Chemistry

Reviews in Mineralogy and Geochemistry, 2007
This chapter provides an introduction to the crystal structure, crystal chemistry and chemical composition of the amphiboles. It is not an exhaustive treatment; it is intended as an introduction to the material discussed in the following chapters.
Hawthorne FC, Oberti R
openaire   +2 more sources

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