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- Type locality: Kuzakai, Miyako city, Iwate prefecture
- Plutonic rocks
- Late Cretaceous
- Lithofacies: Clinopyroxene-bearing hornblende biotite quartz diorite
- Distribution: Several hundreds km
- Distribution: Kuzakai, Miyako city, Iwate pref.
- Kawamura et. al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)