Syenite
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > igneous rock > <igneous rock by composition> > <igneous rock by composition: chemical> > intermediate igneous rock
Descripción
A phanoerocrystalline intrusive igneous rock composed mostly of alkaline feldspar with or without a smaller amount of plagioclase and without notable quartz or nepheline content. The term can also refer to a granite varietal, quarried in antiquity at Syrene in Upper Egypt, in which biotite is substituted for or accompanied by hornblende.
URI original del concepto
Otros términos
- 正長岩 [zh]
- syeniet [nl]
- sienita [es]
- zhèng cháng yán [zh]
- zheng chang yan [zh]
- cheng ch'ang yan [zh]