Earth Materials

Front

What is the hardness scale used for minerals?

Back

The hardness scale, known as Mohs scale, ranges from 1 (talc) to 10 (diamond), with 10 being the hardest.

Front

What mineral group does the chemical formula BaSO4 belong to?

Back

The mineral group is sulfates.

Front

What does the term 'cleavage' refer to in mineralogy?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What is 'streak' in the context of minerals?

Back

Streak is the color of the powder a mineral leaves when scratched on a streak plate.

Front

Which silicate structure forms the strongest and hardest minerals?

Back

The framework structure forms the strongest and hardest minerals.

Front

What is the definition of 'luster' in minerals?

Back

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

Front

What is the difference between 'hardness' and 'cleavage'?

Back

Hardness measures a mineral's resistance to scratching, while cleavage describes how it breaks.

Front

What are native elements in mineral classification?

Back

Native elements are minerals that consist of a single element, such as gold (Au) or copper (Cu).

Front

What are carbonates in mineralogy?

Back

Carbonates are minerals that contain the carbonate ion (CO3) and include minerals like calcite.

Front

What is the significance of the mineral property 'streak'?

Back

Streak helps identify minerals by providing a consistent color that may differ from the mineral's appearance.