Item talk:Q41811: Difference between revisions
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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... | |||
Latest revision as of 21:52, 9 November 2023
Mindat Short Description
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...
