Difference Between acid igneous rocks and basic igneous rocks
Answers
Answer:
Acidic, or basic igneous rocks depends on the quantity of the elements of silica, SiO2, they contain. Acidic rocks such as microgranite, granite, and rhyolite are abundant in silica and include the metals quartz, feldspar, and biotite among others.
Basic rocks such as gabbro, dolerite, and basalt are deficient in silica and include the magmas such as olivine, pyroxene, feldspar or quartz among others. They are also rich in the minerals magnesium and alloy and are often characterized as "mafic".
Explanation:
guys please help me ,hope u like it
Answer:
‘Acidic’ igneous rocks are rocks which are relatively high in silica and relatively low in iron and magnesium. ‘Basic’ igneous rocks are relatively low in silica and high in iron and magnesium.
The terminology dates back a couple of hundred years, and is based on a misconception about the chemical makeup and reactions during the formation of igneous rocks. We just still use the terms because they are old and convenient. They don’t really mean much. An ‘acidic’ igneous rock isn’t really any more ‘acid’ than any other sort of igneous rock.
It’s a moderately convenient way to categorized compositionally different igneous rock types - ‘acid’ to ‘basic’ with ‘intermediate’ for everything in between.