quartz

Spain, Catalonia, Punta d'en Ramis. Quartz vein in granodiorites. Upper Carboniferous - Low Permian.

Spain, Catalonia, Torre Colomina. Granodiorite and granite with quartz veins. Upper Carboniferous - Low Permian.

Spain, Catalonia, Cap de les Penyes Blanques. Granodiorite and granite with quartz veins. Upper Carboniferous - Low Permian.

Spain, Catalonia, Platja d'Aro. On the left is granodioorite porphyry with quartz and aplite veins. On the right is a diorite porphyrite dyke with quartz veins.

Russia, Magadan region, cape Chirikova. Magadan massif of granodiorites. Size - 40 * 45 km. Granodiorites hornblende-biotite. Consist: andesine 50%, anorthoclase 15%, quartz 20%, biotite 7%, green hornblende 5%, monoclinic pyroxene 0,5%. Accessory: chlorite, epidote, zoisite, sphene, zircon, apatite, magnetite. Low Cretaceous.

Russia, Magadan region, cape Chirikova. Magadan massif of granodiorites. Size - 40 * 45 km. Granodiorites hornblende-biotite. Consist: andesine 50%, anorthoclase 15%, quartz 20%, biotite 7%, green hornblende 5%, monoclinic pyroxene 0,5%. Accessory: chlorite, epidote, zoisite, sphene, zircon, apatite, magnetite. Low Cretaceous.

Russia, Primorsky Territory, Mount Falaza. Granodiorite massif. The massif has the shape of an oval elongated in a sub-latitudinal direction. Area 80 km square. Contacts with host rocks - 60-90 degrees. Granodiorites biotite-hornblende, gray, dark gray, medium-grained, fine-grained. Consist: plagioclase 50-60%, quartz 10-15%, orthoclase up to 10%, biotite 10-12%, hornblende 5-15%. Accessory: apatite, zircon, rarely orthite. Upper Cretaceous.

Russia, Khabarovsk Territory, Tordoki-Yani Mountain. Biotite granites containing cordierite. Medium grained, coarse grained. Form batholith. Consist: oligoclase or andesine - 25-60%, K-spar - 10-45%, quartz - 18-32%, biotite - 8-25%. Accesory: apatite, zircon, sphen, monazite, garnet, tourmaline, ortit. Characterized by the presence of cordierite. Low Cretaceous.

Russia, Khabarovsk territory, Sikhote-Alin range, Tordoki-Yani mountain. Biotite granites containing cordierite. Medium grained, coarse grained. Form batholith. Consist: oligoclase or andesine - 25-60%, K-spar - 10-45%, quartz - 18-32%, biotite - 8-25%. Accesory: apatite, zircon, sphen, monazite, garnet, tourmaline, ortit. Characterized by the presence of cordierite. Low Cretaceous.

Gray dacites. Forms an extensive cover. Phenocrysts: oligoclase, orthoclase, sanidin, quartz, biotite. Phenocrystal sizes: 0.1 - 2 mm, rarely 3-4 mm. Upper Cretaceous - Low Paleocen. Thickness: 500-600 metres.