首页 > Term: helvite
helvite
An isometric mineral, 2(Mn4Be3(SiO4)3S) ; manganese may be replaced by iron toward danalite, or by Zn toward genthelvite; forms tetrahedra; Mohs hardness, 6 to 6- 1/2; in veins with quartz, hornblende, and iron oxide; in pegmatites, and some alkaline igneous rocks.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)