Earth Science Quiz #2

Which is an example of a mineral?

• sample A which is liquid at room temperature

• Sample B which contains remains of dead organisms

• Sample C which is synthetic

• Sample D which is solid, inorganic, naturally occurring with definite chemical composition.

Answer explanation

MINERAL is an element or inorganic compound that occurs naturally in the earth’s crust as a crystalline solid or one that has regular repeating internal arrangement of its atoms.

Which refers to the appearance of a mineral in reflected or transmitted light?

• streak

• luster

• color

• cleavage

Answer explanation

MINERAL is an element or inorganic compound that occurs naturally in the earth’s crust as a crystalline solid or one that has regular repeating internal arrangement of its atoms.

How can you describe the luster of hematite?

• metallic

• adamantine

• dull

• silky

Which property can be tested by hammering or breaking the mineral?

• cleavage

• fracture

• both

• neither

A mineral that can be scratched by fingernail has a Mohs Hardness Scale of

• 10

• 5

• above 2.5

• below 2.5

Which of the following is a distinctive property of hematite?

• It has a red streak

• It has a one direction cleavage

• It is composed of Na and Cl atoms

• It fizzes when you pour HCl on it

Which of the following is an example of a silicate?

• Galena (PbS)

• Calcite (CaCO3)

• Quartz (SiO2)

• Halite (NaCl)

Which of the following is an ore of lead?

• Galena (PbS)

• Calcite (CaCO3)

• Quartz (SiO2)

• Halite (NaCl)

It is a process of searching for evidence of any

mineralization hosted in the surrounding rocks.

• Mining

• Milling

• Exploration

• Drilling

It involves taking samples

through a small hole through soil

and loose rock. This tells the geologist what types of rock exist under the

surface and if minerals are present.

• Mining

• Milling

• Exploration

• Drilling