- rombeporfyr
- rom|be|por|fyrsb., -en, -er, -erne (en porfyr)
Dansk ordbog. 2015.
rombeporfyr
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Porphyry (geology) — Porphyry is a variety of igneous rock consisting of large grained crystals, such as feldspar or quartz, dispersed in a fine grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts. In its non geologic, traditional use … Wikipedia
