Question

what is the chemical composition of shale?

Answer 1

Answer:

Shale consists of at least 30 percent clay, with varying amounts of quartz, feldspar, carbonates, iron oxides, and organic matter.

Answer 2

Answer:

Shale consists of at least 30 % clay, with varying amounts of quartz, feldspar, carbonates, iron oxides, and organic matter. Oil shale or bituminous also contains kerogen, a mixture of hydrocarbons from deceased plants and animals.