The most common non-ferromagnesian silicate minerals (40 %)in most igneous rocks are ________.
A)calcite
B)feldspar
C)olivine
D)quartz

Question

The most common non-ferromagnesian silicate minerals (>40 %)in most igneous rocks are ________.
A)calcite
B)feldspar
C)olivine
D)quartz

Quizplus · Accepted Answer

Non-ferromagnesian silicate minerals refer to minerals that do not contain iron or magnesium in their composition. Feldspar is the most common non-ferromagnesian silicate mineral in igneous rocks, accounting for more than 40% of their composition. Calcite is a mineral that is not a silicate and does not occur in igneous rocks. Olivine and quartz are also non-ferromagnesian silicate minerals but are not as common in igneous rocks as feldspar.

The Most Common Non-Ferromagnesian Silicate Minerals (>40 %)In Most Igneous