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A local name for a variety of trachyte that contains a few phenocrysts of oligoclase and biotite in a potentially quartz-bearing glassy groundmass.
Classification of DomiteHide
Mineralogy of DomiteHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Feldspar > Plagioclase > Oligoclase||(Na,Ca)[Al(Si,Al)Si2O8]|
|Glass||An amorphous, homogeneous material with a random liquid-like structure generally formed due to rapid cooling.|
|Mica > Biotite||K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: