NIPPON Kichi - 日本吉

2007/8/3

猿投山の球状花崗岩 Sanage-yama-no-kyujyou-kakou-gan The Round Granite Stones at Mt. Sanage

Jp En


A very rare round granite stones can be seen on the bank of the Hirosawa River near the top of Mt. Sanage (629 m) in Kano Town in Toyota City, Aich Prefecture. They are designated as a National Natural Monument.

As the beautiful joints on the surface of the stones look like petals of a chrysanthemum flower, the stones are called “Kiku-ishi (chrysanthemum stone).” This type pf granite stones can be found in the riverbed and the micaceous granite layers in the cliffs along the river. They are 4 to 8 cm in a total size and 2 to 3 cm in a central size. This very rare petal-shaped pattern was formed by the radial alignment of quartz, feldspar and black mica, which are composing the granite.

As the walking trail is set out, you can easily get to the riverbank.

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Horosawa, Kano-cho, Toyota, Aichi Prefecture 470-0364
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The Round Granite Stones at Mt. Sanage




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