Types of volcanic rocks

Millivolcano lava

This type of hole is relatively small, and generally has a needle-like hole shape with a uniform distribution and a generally gray color. The market is often referred to as "microporous".

Small hole volcanic stone

The pores of these volcanic rocks resemble a sponge. The pores are relatively uniform from the size of sesame seeds to the size of rice grains. With excellent visual effects, it is the most popular among the volcanic rocks in Tengchong, Yunnan, and it is also the largest one. Which according to the color points, can be divided into "small hole black" and "small hole ash" two. The “small hole black volcanic rock” produced by Tengchong in Yunnan Province is darker in color than the same hole series produced in Heilongjiang and Hainan, so it has been very popular in recent years. Especially in Chengdu, Chongqing, Jiangsu, Shanghai, Zhejiang and Tianjin are particularly popular.

Mesoporous lava

This type of volcanic rock is a medium-sized hole. Honeycomb. Has a unique artistic decoration effect, especially for the decoration of some cultural landscapes.

Rough hole volcanic rock

The holes in this type of volcanic rock are large and unevenly distributed. Also used for special decoration.

Red volcanic stone

This kind of volcanic rock is formed by the last residual magma when the volcanic eruption ends. It is usually dark red or earth red, and the density is small and light, even floating on the water, so it is also called “pumice stone”. Due to the short development time, the reserves of red volcanic rocks (red pumice) produced in Tengchong, Yunnan Province are huge and the space for development is huge. Such volcanic rocks are mainly used for certain industrial or agricultural purposes. At present, the red volcanic rocks produced in Tengchong, Yunnan Province are mainly used for the decorative role of cultural stone.