muscovite

Rock type: 
Age: 
1000 millions years

Russia, Karachay-Cherkess Republic, Arkhyz. Quartz-chlorite-muscovite, quartz-muscovite, quartz schists, paragneisses. Makerskaya series. Proterozoic. Mesoproterozoic- Neoproterozoic.

Rock type: 
Age: 
251 millions years

Russia, Altai, rock "Four brothers". Belokurikhinsky granite massif. Porphyry biotite granites. Medium grained. Porphyry phenocrysts - microcline. Consist: microcline - 35-65%, plagioclase - 10-30%, quartz 20-30% biotite - 4-7%. Accessory: magnetite, zircon, apatite, muscovite. Upper Permian - Low Triassic.

Rock type: 
Age: 
251 millions years

Russia, Altai, mount Round. Belokurikhinsky granite massif. Porphyry biotite granites. Medium grained. Porphyry phenocrysts - microcline. Consist: microcline - 35-65%, plagioclase - 10-30%, quartz 20-30% biotite - 4-7%. Accessory: magnetite, zircon, apatite, muscovite. Upper Permian - Low Triassic.

Rock type: 
Age: 
251 millions years

Russia, Altai, mount Round. Belokurikhinsky granite massif. Porphyry biotite granites. Medium grained. Porphyry phenocrysts - microcline. Consist: microcline - 35-65%, plagioclase - 10-30%, quartz 20-30% biotite - 4-7%. Accessory: magnetite, zircon, apatite, muscovite. Upper Permian - Low Triassic.

Rock type: 
Age: 
251 millions years

Russia, Altai, mount Tserkovka. Belokurikhinsky granite massif. Porphyry biotite granites. Medium grained. Porphyry phenocrysts - microcline. Consist: microcline - 35-65%, plagioclase - 10-30%, quartz 20-30% biotite - 4-7%. Accessory: magnetite, zircon, apatite, muscovite. Upper Permian - Low Triassic.