Elvan
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > igneous rock > <igneous rock by composition> > <igneous rock by composition: chemical> > acid igneous rock > rhyolite > quartz porphyry
Descripción
A type of quartz porphyry, local to Cornwall, England, which is usually light gray in color with a hint of buff; often used for ashlar because of its fine texture.
URI original del concepto
Otros términos
- 白色英斑岩 [zh]
- bái sè yīng bān yán [zh]
- bai se ying ban yan [zh]
- pai se ying pan yan [zh]
- 脈斑岩 [zh]
- elvanita [es]