Dacite (igneous rock), Romania

3D ModelNoAI

Locality: Romania

Size: 11 cm x 10 cm x 4 cm

Type: Igneous extrusive (volcanic) rock

Description: Dacite is an aphanitic rock containing essential quartz and sodic plagioclase, with minor biotite, amphibole, or pyroxene; like an andesite but with more quartz and plagioclase more sodic. The name comes from Dacia, Roman name for Siebenburgen, Transylvania, ROMANIA.

Essential minerals: quartz, plagioclase, ± potassic feldspar and/or volcanic glass (groundmass) of appropriate chemistry.

Accessory minerals: amphiboles, pyroxenes, biotite.

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

Concept & 3D-modelling by dr. Andrei Ionut APOPEI