quartz porphyry
Geology
noun
Porphyritic rock consisting of phenocrysts of quartz and alkali feldspar (usually orthoclase) embedded in a microcrystalline or cryptocrystalline groundmass; a rock of this kind.
Origin
Late 18th century. After German quarziger Porphyr.
- supercharger
- supercherie
- superchery
- super-chilled
- superchip
- superchurch
- superciliary
- superciliary arch
- superciliary ridge
- superciliosity
- supercilious
- superciliously
- superciliousness
- supercilium
- supercise
- supercivilized
- superclass
- supercluster
- superclustering
- supercoil
- supercold
- supercollider
- supercolossal
- supercolumniation
- super-compact