Tephrite is an igneous, volcanic (extrusive) rock, with aphanitic to porphyritic texture. Mineral content is usually abundant feldspathoids (leucite or nepheline), plagioclase, and lesser alkali feldspar. Pyroxenes (clinopyroxenes) are common accessory minerals. Quartz and …

碱玄岩（tephrite）一种含 似长石 的碱性玄武质岩，不是 碱性玄武岩 的简称，为SiO 2 明显不饱和、碱含量很高、含似长石、又含 斜长石 的玄武质岩石。

Tephrites: Tephrites are extrusive rocks that are essentially composed of calcic plagioclase, clinopyroxene and foids. Foids normally constitute more than 10 % of the felsic minerals. Tephrites differ from basanites on that they do not contain essential olivine.

A tephrite is an igneous rock of basaltic character that generally occurs as lava flows, but occasionally as minor intrusions. Its essential constituents are calcic plagioclase and clinopyroxene in association with nepheline, leucite, or analcime.

A group of fine grained, mafic igneous rocks, generally extrusive, of basaltic character, primarily composed of calcic plagioclase, augite, and feldspathoid s (typically nepheline), with little or no alkali feldspar or olivine; also, any member of that group; the extrusive equivalent of theralite.

What's the Difference Between a Solstice and an Equinox? Basanites and tephrites occur as gray to black rocks in sheets and flows. Places where basanites are found include Spain, Hungary, Italy, New Zealand, and the southwestern United States; tephrites are found in Germany, Italy, Portugal, Greenland, Uganda, and Colorado.

这一名词用来表示类似响岩但含有基性斜长石的岩石。 [1] 按照火山岩岩石化学QAPF分类 (M＜90%)在13区内,假若橄榄石标准矿物大于10%,则岩石为响岩质碧玄岩,假若小于10%,则叫 …

In order to explore the geochemistry characteristics and genesis of the Miocene tephrite in this volcanic area, together with the coupling between it and the evolution of regional fault...

Tephrite is an igneous, volcanic (extrusive) rock, with aphanitic to porphyritic texture. Mineral content is usually abundant feldspathoids (leucite or nepheline), plagioclase, and lesser alkali feldspar.

Tephrite: An alkaline volcanic rock composed of calcic plagioclase, clinopyroxene, and feldspathoid.