Latite
A rock classification type
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About Latite
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-2.
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.
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.
Unique Identifiers
Mindat ID:
48473
Long-form identifier:
mindat:1:1:48473:0
GUID
(UUID V4):
(UUID V4):
a8af8dc7-18bc-43ec-a827-2a2ad9f9ad37
Classification of Latite
Latite appears in field 8 in the QAPF diagram.
Latite is found in field S3 in the TAS diagram.
Sub-divisions of Latite
Mineralogy of Latite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar | A petrological term for Feldspar Group. |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Latite associated with Brecciated andesite |
Internet Links for Latite
mindat.org URL:
https://www.mindat.org/min-48473.html
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References for Latite
Reference List:
Calton Quarry, Monte Alto, Montegrotto Terme, Padova Province, Veneto, Italy