Geology. A dark ultrabasic igneous rock, generally hypabyssal, containing a substantial amount of olivine together with augite and other…
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| 释义 | the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > hypabyssal rocks (7) picrite1868 Geology. A dark ultrabasic igneous rock, generally hypabyssal, containing a substantial amount of olivine together with augite and other… tinguaite1890 A relatively coarse-grained pale to dark green igneous rock containing alkali feldspar, nepheline, and aegirine, and typically containing needle-like… grorudite1896 (See quot. 1960.) hedrumite1896 A hypabyssal porphyritic igneous rock having a trachytic texture and consisting essentially of a potash-feldspar with small amounts of pyribole and… heumite1901 A brownish-black hypabyssal dike-rock containing alkali feldspars, biotite, and barkevikite, with nepheline, sodalite, and other rocks. plumasite1903 A plutonic rock, typically coarse-grained and found esp. in dykes, consisting chiefly of corundum grains in an oligoclase matrix. ophiolite1937 Geology. Any of a group of basic and ultrabasic igneous rocks, including serpentinite and serpentinized peridotite, gabbro, and diabase, which… |
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