As nouns the difference between dacite and diorite
is that dacite is an igneous, volcanic rock with a high iron content while diorite is a grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.
dacite
Noun
(
en noun)
(geology) An igneous, volcanic rock with a high iron content.
Derived terms
* dacitic
diorite
Noun
(
en noun)
(rock) A grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.
Derived terms
* dioritic
* granodiorite
* microdiorite