Trachydacite
A rock classification type
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About Trachydacite
A rocktype intermediate between phonolite and dacite, similar to trachyte, but notably has >20% quartz.
Unique Identifiers
Mindat ID:
48477
Long-form identifier:
mindat:1:1:48477:6
Classification of Trachydacite

Trachydacite is found in field T in the TAS diagram.
Mineralogy of Trachydacite
Essential minerals - these are minerals that are required within the classification of this rock:
Internet Links for Trachydacite
mindat.org URL:
https://www.mindat.org/min-48477.html
Please feel free to link to this page.
Please feel free to link to this page.
References for Trachydacite
Reference List:

Catarina, Ceará, Brazil