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Item talk:Q41811: Difference between revisions
From geokb
Added additional content from Mindat and Geoscience Ontology to discussion page
(Updated rock class item discussion page with longer source data descriptions) |
(Added additional content from Mindat and Geoscience Ontology to discussion page) |
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= Mindat Description = | = Mindat Short Description = | ||
Trachytic rocks, with felsics comprising 0-5% quartz and alkali feldspar/total feldspar 0 | |||
Trachytic rocks, with felsics comprising 0-5% quartz and alkali feldspar/total feldspar 0.35-0.65. Also a potassic trachyandesite where Na^2O-2. | |||
A porphyritic extrusive rock having phenocrysts of plagioclase and potassium feldspar in nearly equal am... | |||
