The plagioclase in this thin section has polysynthetic twinning. The orthopyroxene also has twinning
The plagioclase in this thin section has polysynthetic twinning. The orthopyroxene also has twinning present in most grains. The clinopyroxene is filling voids in the rock and have an anhedral structure, filling interstitial space, compared to to the plagioclase and orthopyroxene which range from subhedral to euhedral. The rock is a gabbronorite due to the presence of both orthopyroxene and clinopyroxene. -- source link
Tumblr Blog : optical-mineralogy.tumblr.com
#geologist#geology#petrology#pretty#physics#nature#volcano#gabbro#pyroxene#plagioclase#feldspar#rainbow#mineralogy#microscope#minerals#mineral#earth science#optmin