
Trachyte is fine-grained, usually light-colored volcanic or extrusive igneous rock. It has an intermediate composition with its essential alkali feldspar, lesser plagioclase, and minor …
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Le trachyte est un type de roche relativement homogène en termes de composition, constitué principalement de minéraux de feldspath alcalin, avec de plus petites quantités d'autres minéraux comme le quartz, la …
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Trachyte grades into latite as the alkali feldspar content decreases, and into rhyolite with an increase in quartz. Ref: AGI
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Trachytic texture, also known as trachytic structure or trachytic fabric, is a specific type of texture found in certain volcanic rocks, particularly in trachyte, which is an extrusive igneous rock. This texture is characterized by a specific arrangement of mineral crystals and … See more
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Trachyte is a volcanic rock that is primarily composed of alkali feldspar. This attractive mineral is commonly used in stone buildings, all the way back to ancient Rome. Several prominent …
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Trachytes are composed chiefly of alkali feldspar with minor amounts of dark-coloured minerals such as biotite, amphibole, or pyroxene. Compositionally, trachyte is the volcanic equivalent of …
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Trachyte is a type of volcanic rock that falls within the category of extrusive igneous rocks. It is characterized by its unique composition and texture, which make it distinct …
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The major mineral component of trachyte is alkali feldspar (e.g. orthoclase), and it generally contains no quartz. Trachyte often displays trachytic texture, where acicular to tabular feldspar …
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The major mineral component of trachyte is alkali feldspar (e.g. orthoclase), and it generally contains no quartz. Trachyte often displays trachytic texture, where acicular to tabular feldspar phenocrysts align in one direction, suggestive of …
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Trachyte, light-coloured, very fine-grained extrusive igneous rock that is composed chiefly of alkali feldspar with minor amounts of dark-coloured minerals such as biotite, amphibole, or pyroxene. …
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Le trachyte est un type de roche relativement homogène en termes de composition, constitué principalement de minéraux de feldspath alcalin, avec de plus petites …
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The mineral content of Trachyte rock includes Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz and The compound content of Trachyte rock includes Potassium Oxide, Sodium Oxide, …
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On classe les trachy-andésites en fonction de la nature et des proportions des feldspaths et des minéraux ferromagnésiens : les latites contiennent les mêmes proportion de sanidine que de …
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Trachyte is fine-grained, usually light-colored volcanic or extrusive igneous rock. It has an intermediate composition with its essential alkali feldspar, lesser plagioclase, and minor mafic minerals. Also, it may have none to a small …
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