Alumstone

Moh's hardness:3.5-4
market value:22.58dollar/ton
main application:chemical industry

Andalusite

Moh's hardness:7.5
market value:516.12 dollar/ton
main application:refractory materials, ceramic, alloy

Apatite

Moh's hardness:5
market value:64.51dollar/ton
main application:chemical industry, agriculture, medical science, light industry, metallurgical industry