Basanite (/ ˈ b æ s. ə ˌ n aɪ t /) is an igneous, volcanic rock with aphanitic to porphyritic texture. It is composed mostly of feldspathoids, pyroxenes, olivine, and calcic plagioclase and forms …

2023年1月29日 · 碧玄岩 （英语： Basanite）是一种 火山 喷出岩，具有隐晶质到斑状纹理。 它主要由长石、辉石、橄榄石和斜长石组成，由含二氧化硅低且含碱金属氧化物高的岩浆，喷出地 …

basanite, extrusive igneous rock that contains calcium-rich plagioclase feldspar (usually labradorite or bytownite), feldspathoid (usually nepheline or leucite), olivine, and pyroxene …

一种碱性玄武质岩石,由单斜辉石、斜长石、常见的副长石类和橄榄石斑晶组成的岩石。 按实际矿物成分在QAPF图解14区中确定。 按化学成分分类位于TAS图解U1区内。 按副长石成分可分 …

When normative albite exceeds 5 wt.%, rocks are classified as basanite, and when normative nepheline exceeds 20 wt.%, they are classified as nephelinite. Nevertheless, Martin Vaz …

2023年9月22日 · Basanite is a fine-grained, dark-colored volcanic or extrusive igneous rock. Fine-grained means its grains are too small to see without a microscope. Compositionally, basanite …

basanite /ˈbæsəˌnaɪt/ 1.N a black basaltic rock containing plagioclase, augite, olivine, and nepheline, leucite, or analcite, formerly used as a touchstone (旧时被用作试金石的)碧玄岩 [1]

Not to be confused with bassanite, the mineral, or basanite (chert), the black chert. Basanite appears in field 14 in the QAPF diagram. A family of rock-forming minerals consisting of …

生石膏 CaSO4·2 H2O 是 天然矿物，为白、浅黄、浅粉红至灰色的透明或半透明的板状或纤维状 晶体。 性脆，128℃失1.5H2O，163℃失2H2O。 工业上将生石膏加热到150℃脱水成熟石 …

Nepheline-basanite. Mafic (dark) igneous rock with aphanitic matrix and phenocrysts of green olivine and black pyroxene. Collection of Department of Geology, Faculty of Science, Palacký …