A mineral property that describes how easily a mineral can be scratched; scale developed by Friedrich Mohs.

When a solid crystallizes out of a solution, it is called a _____.

An ore is a mineral that can be:

a naturally occurring, inorganic solid, with a specific chemical composition and a definite crystalline structure is called:

Magma is different from lava because it refers to:

If a mineral breaks unevenly with rough or jagged edges, it has:

A student describes a mineral as being metallic. What is he/she describing?

The color of a mineral's powder is called its:

The most common mineral group, which contains silicon and oxygen is called the ____ group.

A common molecular shape of silicate minerals is called:

These are valuable minerals prized for their rarity and beauty; often polished and used for jewelry or decoration.