Quartz diorite porphyry

Rock type: 
Igneous
Age: 
86 millions years
Tags: 
Cretaceous, Quartz diorite, Porphyry structure, K2, quartz, plagioclase, hornblende, biotite, magnetite, apatite, sphene
Submitted 4 years 6 months ago by rock.

Russia, Khabarovsk Territory. Quartz diorite porphyry. Upper Cretaceous. Consist: quartz 10-15%, plagioclase 60-65%, hornblende 15-25%, biotite up to 5%. Plagioclase - andesine or labrador-andesine. Accessory: magnetite, apatite, sphene.

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