rock type

基本解释

The magnetism of several kinds of chrysotile asbestos of ultrabasic rock type from Sichuan, Mangya and Xinkang Asbestos Mines were investigated.
研究了我国四川、新康与茫崖三个石棉矿所产的超基性岩型纤蛇纹石石棉的磁性。
The mine is the earliest discovered broken belt altered rock type gold deposit, it belongs to remelting magma mesothermal type.
该矿是发现最早的破碎带蚀变岩型金矿床，其成因属重熔岩浆中温热液型。
Accordingly, the emphasis must by placed on the prospecting of tough shear zone type and tectonic altered rock type gold deposits.
因此，在库斯拉甫地区，应注重寻找韧性剪切带型金矿和构造蚀变岩型金矿。

That is a necessary but not a sufficient condition, as the type of rock involved, called carbonaceous chondrite, is found in other asteroids, too.
ECONOMIST: Asteroid impacts