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Ishikoyama Granite
- Plutonic rocks
- Cretaceous
- Lithofacies: Biotite granite
- Distribution: Ono, Hino city, Gamo county, Shiga pref.
- Harayama et al. (1989) Geology of the Gozaishoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 145p. (in Japanese with English abstract 6p.)