Trachyte. polarised light micrograph

Trachyte. polarised light micrograph

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Caption: Trachyte. Polarised light micrograph of a thin section of trachyte, an igneous rock. This sample is classed as "Quartz-trachyte". One of the essential components of trachyte is plagioclase feldspar, seen here as large lath-shaped crystals. Olivine is also visible as the large irregularly shaped crystals, with randomly oriented fractures. Both the feldspar and olivine are embedded in a fine fragmented matrix (typically of sanidine and albite). Horizontal object size of this section: 1.2 mm.

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Keywords: color, colour, colourful, colours, cross polarised, cross-polarised, cross-polarized, crossed nichols, crystal, crystalline, crystals, deformation, deformed, earth science, feldspar, folded, folding, geological, geology, light micrograph, light microscope, lm, metamorphic, mineral, mineralogy, minerals, multicoloured, plm, polarised light micrograph, polarised light microscopy, polarized, polarized light micrograph, polarized light microscopy, quartz, rock, rocks, section, sectioned, trachyt

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