Anti-fire stone <Tokyo> [Japanese famous stone]

KOUKA Stone

anti-firestone

This stone is from Niijima, part of the Izu Islands, and was created by an eruption 886 years ago.
As the Pacific Plate subducted under the Philippine Sea Plate, magma erupted, creating the Izu Islands. This is also the point where other plates, such as the Okhotsk Plate and the Amur Plate, intersect, and continues to be subjected to a great deal of pressure from the Earth.
Its spongy and extremely light nature comes from the rapid cooling of magma, making it so light that it can float on water.
When viewed under a microscope, the beautiful glassy flow structure creates a pattern that looks just like flowing water.
It is resistant to fire and acid, and possesses the unique properties of magma, such as melting without crumbling when exposed to high temperatures, and then solidifying when cooled.
Because it is a stone formed by rapid cooling, it has the property of retaining its shape even if it is rapidly cooled again.
This stone is not only fire-resistant, but also moisturizing and soundproof.
The Moai statue at Shibuya Station was also made from this stone.
Moyai means "to join forces" in the Niijima language.

This stone is from Niijima, which belongs to the Izu Islands, and was created by a volcano eruption 886 years ago. The Izu Islands were formed when magma erupted as the Philippine Sea Plate subducted, and the Izu Islands were created here. The Okhotsk Plate, the Amur Plate, and other plates still intersect here, and it is a place that continues to receive a lot of pressure from the Earth. The characteristic of sponge-like and very light is the result of the rapid cooling of the magma, and it is so light that it can floats on water. When viewed under a microscope, the beautiful glassy flow structure shows a pattern that looks like flowing water.
It is resistant to fire and acid, and has the unique properties of magma, which allows it to melt without crumbling when exposed to high temperatures, and then cool and harden again. Because it is a stone formed by rapid cooling, it has the property of not breaking down and maintaining its shape even if it is rapidly cooled again. It is not only fire-resistant, but also moisturizing and soundproofing. The Moai statue at Shibuya Station was also made from this stone. Moai means “cooperation” in Niijima's language