黑电气石 meaning in English

aphrizite
aphryzite
jet stone
schorlite

Glass schorl glass stone
玻璃黑电气石,玻璃石
In addition , the high infrared radiation is due to the existence of si - o bond and o - b bond in tourmaline , which has nothing to do with the special structure of it
此外，黑电气石有较高的红外发射率与电气石的特殊结构没有关系，主要与存在si - o和b - o红外活性键有关。
The tourmaline is a kind of boron and silicate mineral , calling " the green imperial or royal seal " of the gems , there are its colors in many , the crystallization has nothing in common with each other , the crystal structure has tripartite crystal , six arrises body , post form body and one bunch of needles form fibrous respectively , the hardness of the tourmaline is generally about 7 . 3 - 9 . 6 , the relative density is 3 . 03 - 3 . 25
式中r代表金属阳离子，当r为mg2 fe2或li al3时，分别构成镁电气石黑电气石和锂电气石三个端员矿物种。电气石晶体呈近三角形的柱状，两端晶形不同，柱面具纵纹，常呈柱状针状放射状和块状集合体。