Foid-syenite from Ditrău, Romania (igneous rock)3D ModelNoAI
Locality: Ditrău, Romania
Size: 17 cm x 10 cm x 9 cm
Type: Igneous intrusive (plutonic) rock
Description: Description: Foid-syenites are a group of phaneritic, holocrystalline feldspathoidal igneous rocks showing a great diversity of mineral compositions, e.g., alkali feldspar varies from about 35% to 80%, feldspathoids vary from 10% to 45%, sodic-plagioclase varies from less than 5% to 45%, and mafics (iron-rich biotite, sodic amphiboles, sodic pyroxenes) vary from 10% to 65%. This rock sample contains alkali-feldspar with sodalite, cancrinite, and nepheline minerals. The mafic minerals are represented by amphiboles.
Essential minerals: alkali-feldspar, feldspathoid(s) (sodalite ± nepheline ± cancrinite)
Mafic minerals: amphibole (hornblende)
Website: http://geology.uaic.ro/muzee/mineralogie/
Concept & 3D-modelling by dr. Andrei Ionut APOPEI
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