[shahriaralam]

This is my high school textbook describing what minerals are. What happened to minerals being naturally occurring, inorganic solids with definite chemical composition and a crystalline structure?

It goes on to state that minerals form rocks and by extension, proceeds to call coal, an organic substance, a mineral.

Later on, it once again states, "The substances available above and underneath the soil from which we get necessary metals and nonmetals, to make various products are known as minerals. The places where these minerals are found are called mines."

Oh, and what's going on with bauxite not being ore of aluminium? I couldn't confirm this anywhere 

[Borek]

Looks like it is poorly written and poorly thought out.

[shahriaralam]

Looks like it is poorly written and poorly thought out.

Sadly, it doesn't surprise me. But that's how it is here, millions of students including me are studying this book, many of us simply noting it down, without a proper internet connection to know any better. This book hasn't changed in 6 or 7 years either. And even worse, this is far from the only mistake in our textbooks.