dark mineral

Quantitative study on the thermal infrared radiation of dark mineral rock in condition of uniaxial loading

多暗色矿物类岩石单轴加载过程中红外辐射定量研究

Most of them have dark mineral inclusions , crystal inclusions and cracks .

样品中大多存在暗色矿物包体、晶体包体和裂隙。

A hard heavy dark mineral that is the chief source of tin .

一种硬而重的黑色矿物，是锡的主要来源。

Asteroids are chunks of dark mineral rich rock that reflect almost no sunlight , so they are hard to spot from Earth .

小行星是几乎不反射光的大块黑色富含矿物质的岩石块，所以很难从地球观测。

They banded the walls in light and dark grey mineral .

他们用淡灰色和深灰色的矿石砌墙。

A dark brown mineral of the amphibole group ; magnesium iron silicate .

闪石族中一种深褐色的矿物，含镁、铁的硅酸盐。

A dark gray mineral with a metallic luster that is a source of tin .

一种深灰色矿物，有金属光泽，是锡的来源。