A pale igneous rock consisting mostly of potassium feldspar and plagioclase.
Origin: From trachyte, from τρᾱχύς.
an igneous rock, usually light gray in color and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica
Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture. It is the volcanic equivalent of syenite. The mineral assemblage consists of essential alkali feldspar; relatively minor plagioclase and quartz or a feldspathoid such as nepheline may also be present.. Biotite, clinopyroxene and olivine are common accessory minerals.
Chambers 20th Century Dictionary
trā′kīt, n. a crystalline igneous rock, generally grayish in colour, usually fine-grained or compact, more or less markedly porphyritic, with large crystals of sanidine and scales of black mica.—adjs. Trachyt′ic; Trach′ytoid. [Gr. trachys, rough.]
The numerical value of trachyte in Chaldean Numerology is: 7
The numerical value of trachyte in Pythagorean Numerology is: 1
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