picrite

There is one kind of picrite in Manxin of Menglian of Southwestern Yunnan that was considered as vein of picrite porphyrite by predecessors.

产于滇西南孟连曼信的苦橄岩，前人定为苦橄玢岩岩脉。

III.silicate mineral contain iron, include olive stone, black column stone, common picrite etc.

、硅酸盐矿物:有橄榄石、黑榴石、十字石、黑柱石、普通辉石等。

X-ray images were formed and shown in colors or in 3 dimensions, and have no distortion at low magnification.Hidden zonate phenomena of a picrite were found.

伪彩色、维视图和内插放大方式显示图，解决了低倍X失真问题，观察到了辉石的隐环带现象。