Reframe Japan, Wabi-Sabi

Thunder stone

Neo thunder stone, lightning stone

In the Neo area, there is a stone which is called Neo Kaminari-ishi(根尾雷石) or Neo Raikou-seki(根尾雷光石). If making a literal translation, it is "Neo thunder stone" or "Neo lightning stone".

Neo Kaminari-ishi or Neo Raikou-seki is considered to be chert. But one characteristic is intrusion into base rock. The intrusion is white or translucence and they are considered to be limestone or silica.

Of course, this kind of stones can be found in other areas in Japan, however, stones in Neo area are more sharpened in white and red color. Further, white area is bordered with bright red and it is bold.

These are photos of Kaminari-ishi or Raikou-seki:

Kaminari-ishi or Raikou-seki

Water sprayed:
Kaminari-ishi or Raikou-seki

Kaminari-ishi or Raikou-seki

Kaminari-ishi or Raikou-seki

The white or translucent intrusion looks like lightning and it seems to be the reason of origin of its name.

Kaminari-ishi or Nikuishi

Look-alike Neo Kaminari-ishi or Neo Raikou-seki can be found in other areas of Japan. From the outlying area of Neo, Kaminari-ishi(雷石) or Nikku-ishi(肉石) is typical.

Kaminari-ishi or Nikku-ishi can be found from Toki-river(Gifu prefecture) or Shounai-river(Aichi prefecture), which is located in the middle of Japan's main island.

If making a literal translation, Kaminari-ishi is Thunder stone and Niku-ishi is Meat stone. The origin of the name Kaminari-ishi is the same as Neo Kaminari-ishi and the reason is that white or translucent intrusion looks like lightning.

The origin of the name Niku-ishi is that white intrusion looks like streaky meat.

The big difference between Neo's one and Toki-river's one is the intrusion.

Neo Kaminari-ishi is rich in limestone, however, intrusion of Kaminari-ishi or Niku-ishi is silica. The reason of the difference between white and translucent is not sure, however, translucent intrusion seems to be more like chalcedony.

These are photos of Kaminari-ishi or Niku-ishi:

Kaminari-ishi or Niku-ishi

Kaminari-ishi or Niku-ishi

Kaminari-ishi or Niku-ishi

Water sprayed:
Kaminari-ishi or Niku-ishi

I think that white intrusion is more found in chert and translucent intrusion is more found in jasper commonly. It is true that almost Kaminari-ishis are chert but sometimes there are stones which is considered to be jasper. It has a lot of trouble telling stones from Toki-river or Shonai-river apart for jasper or chert.

I believe that Kaminari-ishi or Niku-ishi is characteristic as BeniKamo-ishi which is found in the upper of Kamo-river, located in Kyoto Prefecture, Japan. BeniKamo-ishi is the almost same as Kaminari-ishi, however, it is more famous stone as red and white intrusion stone.