1) Igneous rock
Found on
https://www.crosswordclues.com/clue/porphyritic
Porphyritic is an adjective used in geology, specifically for igneous rocks, for a rock that has a distinct difference in the size of the crystals, with at least one group of crystals obviously larger than another group. Porphyritic rocks may be aphanites or extrusive, with large crystals or phenocrysts floating in a fine-grained groundmass of non...
Found on
http://en.wikipedia.org/wiki/Porphyritic
• (a.) Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline.
Found on
http://thinkexist.com/dictionary/meaning/porphyritic/
Describing a rock that contains large, noticeable crystals, usually feldspars.
Found on
http://www.encyclo.co.uk/local/22291
Por`phy·rit'ic adjective [ Confer French
porphyritique .]
(Min.) Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline.
Found on
http://www.encyclo.co.uk/webster/P/129
[
adj] - (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals
Found on
http://www.webdictionary.co.uk/definition.php?query=porphyritic
(Of igneous rocks) Comprising large crystals (phenocrysts) set in a finer grained or glassy groundmass.
Found on
https://www.encyclo.co.uk/local/20501
adjective (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals
Found on
https://www.encyclo.co.uk/local/20974
A texture of an igneous rock in which large crystals (phenocrysts) are set in a matrix of relatively finer-grained crystals or of glass.
Found on
https://www.encyclo.co.uk/local/22327
No exact match found.
