PART 6

What is luster in minerals?

• The quality or appearance of a mineral when light is reflected on its surface

• The resistance of a mineral to scratching

• The color of a mineral

• The tendency of a mineral to break along certain planes

Which type of luster makes minerals appear to have an opaque and shiny surface?

• Submetallic

• Non-Metallic Luster

• Metallic Luster

• Earthy Luster

What is the measurement of the resistance of a mineral to scratching called?

• Luster

• Hardness

• Color and Streak

• Cleavage

Which mineral is the softest and has a pearly and greasy luster?

• Talc

• Hematite

• Galena

• Calcite

What is the most important source of iron?

• Hematite

• Calcite

• Talc

• Galena

Which mineral is also known as 'Fool's Gold'?

• Milky Quartz

• Graphite

• Pyrite

• Mica

What is the tendency of a mineral to break along certain planes to make smooth surfaces called?

• Magnetism

• Hardness

• Cleavage

• Fracture

Which mineral is used in the production of lead-acid batteries and radiation shielding?

• Galena

• Mica

• Pyrite

• Milky Quartz

What is the property used to see the color of a mineral in its powdered form?

• Color

• Streak

• Luster

• Hardness

Which mineral is used in construction and building material?

• Calcite

• Hematite

• Galena

• Talc