INSPIRE
Registry

trachytoid

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Label:
trachytoid
Definition:
Fine grained igneous rock than contains less than 90 percent mafic minerals, less than 10 percent feldspathoid mineral and less than 20 percent quartz in the QAPF fraction and has a plagioclase to total feldspar ratio less than 0.65. Mafic minerals typically include amphibole or mica; typically porphyritic. Includes rocks defined modally in QAPF fields 6, 7 and 8 (with subdivisions) or chemically in TAS Field T as trachyte or latite.
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Label Governance level Status
alkali feldspar trachytic rock eu-technical Valid
latitic rock eu-technical Valid
trachytic rock eu-technical Valid