D is for Dacite rock

3D ModelNoAI

Size: 4 x 10 x 11 cm

Type: Igneous extrusive (volcanic) rock

Description: Dacite is an extrusive igneous rock that is intermediate in composition between rhyolite and andesite. It is composed mainly of Plagioclase Feldspar, Quartz, and Biotite or Hornblende. The texture of Dacite is typically porphyritic, with larger crystals or phenocrysts of minerals such as Plagioclase or Quartz embedded in a fine-grained matrix of smaller crystals. The mineral composition of Dacite can vary, typically includes plagioclase feldspar as the dominant mineral, along with smaller amounts of quartz, biotite or hornblende, and other minerals such as pyroxene or olivine.

Website: http://geology.uaic.ro/muzee/mineralogie/

Concept & 3D-modelling by Andrei Ionut APOPEI