Activity 17 Minerals in Rocks

Front

What is a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and a crystalline structure.

Front

What is the difference between a rock and a mineral?

Back

A rock is a solid material composed of one or more minerals, while a mineral is a single substance with a specific chemical composition.

Front

What is granite?

Back

Granite is an igneous rock composed mainly of quartz, feldspar, and mica.

Front

What mineral is commonly found in limestone?

Back

Calcite is the mineral commonly found in limestone.

Front

What mineral is commonly found in granite?

Back

Quartz is the mineral commonly found in granite.

Front

What is the streak color of a mineral?

Back

The streak color is the color of the powder left when a mineral is scraped across a porcelain plate.

Front

What does transparency mean in relation to minerals?

Back

Transparency refers to how much light can pass through a mineral; it can be classified as transparent, translucent, or opaque.

Front

What is luster in minerals?

Back

Luster describes how light reflects off the surface of a mineral, indicating its shine or dullness.

Front

What is the Mohs scale?

Back

The Mohs scale is a scale that ranks minerals based on their hardness, from 1 (talc) to 10 (diamond).

Front

What is the definition of igneous rock?

Back

Igneous rock is formed from the cooling and solidification of molten rock (magma or lava).