Answer:Normally contains no fossils.Rarely REACTS with acid.
Answer:Normally contains no fossils.Rarely reacts with acid.Usually has no layering.
Answer:Normally contains no fossils.Rarely reacts with acid.Usually has no layering.Usually made of TWO or more minerals.
Answer:Normally contains no fossils.Rarely reacts with acid.Usually has no layering.Usually made of two or more minerals.May be LIGHT or dark colored.
Answer:Normally contains no fossils.Rarely reacts with acid.Usually has no layering.Usually made of two or more minerals.May be light or dark colored.Usually made of mineral crystals of different sizes.