Quartz Diorite section, Jersey. Polarized photomicrograph
Quartz diorite is an igneous, plutonic (intrusive) rock, of felsic composition, with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with 10% or less potassium feldspar. Quartz is present at between 5 and 20% of the rock. Biotite, amphiboles and pyroxenes are common dark accessory minerals. Quartz diorite is an intermediate igneous rock that is gradational to monzonites. They are often associated with subduction-related, or post-orogenic magmatism. They are the coarse-grained equivalent to andesite
Size: 3898px × 2598px
Photo credit: © Scenics & Science / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: diorite, felsic, geology, igneous, jersey., magmatism, mineralogy, photomicrograph, plutonic, polarized, post-orogenic, quartz, section
