Who is harder? Talc or Gypsum?

• Talc

• Gypsum

Who is harder? Diamond or Feldspar?

• Diamond

• Feldspar

Who is harder? Fluorite or Quartz?

• Quartz

• Fluorite

Who will get scratched by the penny?

• Talc

• Gypsum

• Apatite

• Corundum

Who will get scratched by the Glass?

• Talc

• Gypsum

• Apatite

• Corundum

Who will get scratched by the Steel File?

• Talc

• Gypsum

• Apatite

• Corundum

A reddish brown mineral was found. It has a gray streak and can be scratched by a fingernail. What mineral is it?

• copper

• talc

• Bauxite

• corundum

A mineral was found with a metallic luster. It was yellow in color and had a greenish black streak. Is it gold?

• yes

• no

A mineral was found that can be scratched by quartz but not fluorite. It is green in color but has a colorless streak. What mineral is it?

• Bauxite

• Garnet

• Hornblende

• Feldspar

This mineral has a nonmetallic luster. It is colorless with a colorless streak. A fingernail cannot scratch it and it cannot scratch a fingernail. What mineral is it?

• Halite

• Muscovite

• Galena

• Calcite