INSPIRE
Registry

foid dioritoid

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Label:
foid dioritoid
Definition:
Phaneritic crystalline igneous rock in which M is less than 90, the plagioclase to total feldspar ratio is greater than 0.5, feldspathoid minerals form 10-60 percent of the QAPF fraction, plagioclase has anorthite content less than 50 percent. These rocks typically contain large amounts of mafic minerals. Includes rocks defined modally in QAPF fields 13 and 14.
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Label Governance level Status
foid monzodiorite eu-technical Valid
foid diorite eu-technical Valid