Mineral Hardness and Properties

The video tutorial explains the characteristics of a mineral that is very hard, with a hardness of nine, capable of scratching glass. It also describes the mineral's appearance, which often has a columnar look.

What characteristic allows this mineral to scratch glass?

• It is very hard.

• It is very soft.

• It is very flexible.

• It is very light.

What is the hardness level of this mineral on the Mohs scale?

• Nine

• Ten

• Eight

• Seven

What does a hardness of nine indicate about a mineral's ability to scratch other materials?

• It can only scratch soft materials.

• It cannot scratch any materials.

• It can scratch most materials.

• It can scratch all materials.

Which of the following is a possible appearance of this mineral?

• Amorphous

• Fibrous

• Columnar

• Granular

Which of the following is NOT a feature of the mineral described?

• Columnar appearance

• Scratches glass

• Soft texture

• Very hard