The Damiao iron deposit is located at the southern margin of the Damiao plagioclaserock body and northern side of the southern edge of Hongshila-Damiao deep fault.
河北承德大庙黑山铁矿床位于大庙斜长岩体南部边缘，红石砬—大庙深断裂附近北侧。
2
The major rock forming minerals include olivine, orthopyroxene, clinopyroxene, plagioclase and amphibole.
其主要造岩矿物为橄榄石、斜方辉石、单斜辉石、斜长石和角闪石。
3
A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.