Are all rocks inorganic?

I don't understand if organic sedimentary rocks are inorganic. When I looked it up it said all rocks are inorganic.

1 Answer
May 7, 2018

Answer:

No rocks can be organic in origin.

Explanation:

If by organic the person means presently living then all rocks are inorganic. Rocks are not alive or living

If by organic the person means the source of the rocks then some rocks are organic in nature.

Limestone for example is formed from the Calcium Carbonate of dead sea shells. Limestone is then considered to be an organic sedimentary rock. Amber is formed from fossilized tree sap. Amber then is organic in origin.

So some rocks are organic in origin so no not all rocks are inorganic.