Essential minerals
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Description
Those minerals existing in a rock that are used for its classification in main petrographic families or classes; see Quartz, Alkali feldspar, Plagioclase, Feldspathoid.
Synonyms and Related Terms
main minerals; minerais essenciais (Port.)
Sources Checked for Data in Record
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009.