نتایج جستجو برای: felsic pegmatite

تعداد نتایج: 1138  

Journal: :Rocky Mountain Geology 2021

ABSTRACT A previously undescribed small lenticular (~5 × 5 m) pegmatite, located near Wellington Lake in the NW part of 1.08 Ga ‘A-type’ (anorogenic) ferroan Pikes Peak granite batholith, ~15 km SW South Platte pegmatite district central Colorado, is concentrically zoned around a mostly monomineralic quartz core with interconnected miarolitic cavities. Major constituents are quartz, perthitic m...

Journal: :Lithos 2021

We modeled water exsolution from a growing and crystalizing felsic magma body using conductive thermal model with simplified physical mechanisms of volatile transport. Magma solidification leads to the release initially dissolved in melt. Solidification behaviour depends, turn, on content. The is channeled where solidified enough form crystal network rapidly ascends until it encounters solid ro...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2007

Journal: :Journal of the Mineralogical Society of Japan 1953

Journal: :Acta Geologica Polonica 2023

In this study the formation of polygenetic High Tatra granitoid magma is discussed. Felsic and mafic mixing mingling processes occurred in all batches composing pluton are documented by typical textural assemblages, which include: microgranular enclaves (MME), clots, felsic quartz-plagioclase-titanite ocelli, biotite-quartz poikilitic plagioclase crystals, chemically zoned K-feldspar phenocryst...

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