Which class of minerals is the most abundant in the crust and Earth's mantle? silicates sulfates halides sulfides oxides

Answer: silicates

Explanation:

Silicates are the most abundant minerals, they occur in different forms in the earth's mantle. They occur as ores of many useful metals and are found in soil. Just as soil is found everywhere, silicates in soil are also found everywhere hence they are the most abundant class of minerals.