Oga Stone (Akita Prefecture) [Famous Japanese Stones]

OGA Stone

Oga Stone

Oga stone (also known as Kanpu stone) is a stone from a volcano called Kanpuzan, located in a national park in the eastern part of the Oga Peninsula.
Eruptions continued 20,000 years ago, but since then there has been no significant volcanic activity, with the only notable exception being a pyroclastic flow about 2,700 years ago.
It is classified as pyroxene andesite, which includes basalt.
This is a unique stone that contains magnetite, amphibole, augite, olivine, aegirine, and aegirine.
If you look closely at the stones, you can see traces of lava erupting, which has involved various stones.
Although there are other theories, Mt. Kanpu is a place with such beautiful scenery that it is said to be one of the three most scenic spots in the world, along with the Grand Canyon in the United States and the fjords of Norway.

Oga stones (also called Kanpu stones) are stones from MT. Kanpu, a volcano in a quasi-national park in the eastern part of the Oga Peninsula. Eruptions happened continually on 20.000years ago, but after that time, there has been no volcanic activity, except for a pyroclastic flow happened around 2700years ago. it is a type of pyroxene andesite, which also included basalt. It is a unique stone that contains magnetite, hornblende, augite, olivine and aegirine. If you look closely at the stone, you can see traces of lava eruptions that engulfed various types of stone.
Although there is other opinion, it is said that MY Kanpu is a place that has beautiful scenery and it is one of the three most scenic spots in the world, along with the Grand Canyon in the United Stated and the Fjords of Norway.