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Latite

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Name:
The name, given by Ransome in 1898, is derived from Latium, Italy.
Trachytic rocks, with felsics comprising 0-5% quartz and alkali feldspar/total feldspar 0.35-0.65. Also a potassic trachyandesite where Na2O-22O.

A porphyritic extrusive rock having phenocrysts of plagioclase and potassium feldspar in nearly equal amounts, little or no quartz, and a finely crystalline to glassy groundmass, which may contain obscure potassium feldspar; the extrusive equivalent of monzonite.

Latite grades into trachyte with an increase in the alkali feldspar content, and into andesite or basalt, depending on the presence of sodic or calcic plagioclase, as the alkali feldspar content decreases. It is usually considered synonymous with trachyandesite and trachybasalt.


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Classification of LatiteHide

QAPF_V_8.png

Latite appears in field 8 in the QAPF diagram.

TAS_S3.png

Latite is found in field S3 in the TAS diagram.

Sub-divisions of LatiteHide

Mineralogy of LatiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
FeldsparA petrological term for Feldspar Group.

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