Question

difference between acid igneous rocks and basic igneous rocks....plzzzz ans fst

Answer 1

Acidic-
1.Contain more than 65 per cent silica
2.Contain very low percentage of oxides
3.Less dense
4.Light coloured
5.Eg.granite
Basic-
1.Contain low percentage of silica
2.Contain high percentage of oxides
3.Dense
5.Dark coloured
6.Eg.basalt

Answer 2

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".