Kitagi Stone (Okayama Prefecture) [Famous Japanese Stone]

Kitagi Stone

Kitagi Stone

One of the beautiful small islands floating in the Seto Inland Sea.
Kitagi stone is a type of granite that was formed in the geology of the Cretaceous period of the Mesozoic era, and is highly valued as a Japanese stone.
It is believed that people have lived here since the Kofun period, and it was one of the bases of the Manabe clan, a military commander who participated in the Genpei War.
It is famous for being used in the stone walls of Osaka Castle and the Bank of Japan headquarters.
There are red and blue Kitaki stones, and the red ones are thought to be more oxidized because they come from geology closer to the surface.

The place of production is one of the beautiful small islands floating on the Seto Inland Sea.
A type of granite grown in the geology of the Cretaceous Period of the Mesozoic era, KITAGI stone is valued as a Japanese stone and is highly regarded. The Kitagi Island is said to have been inhabited since the Kofun period, and was one of the bases of the Manabe clan, a military commander who participated in the Genpei War. It is highly famous for being used in the building of stone walls of Osaka Castle and the Bank of Japan headquarters. There are red and blue-white KITAGI stone, the red one is thought to be highly oxidized as it is produced from geology close to the surface.

Origin Okayama Prefecture
meaning Luck in games, change, career advancement
Mineral Classification biotite fine grained granite
chemical composition Si₂, Al₂O₃, K₂O, Na₂O, CaO, Na₂O
Crystalline Monoclinic
cleavage Complete in one direction
Mohs hardness 7
gloss Glass gloss
color Black, white
specific gravity 2.5 to 2.8
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