Minerals Test

Which two minerals are commercial sources of iron?

• galena and graphite

• Muscovite mica and biotite mica

• garnet and fluorite

• hematite and magnetite

Which element, found in both biotite mica and muscovite mica, makes up the greatest percent by volume of Earth's crust?

• nitrogen

• oxygen

• potassium

• silicon

Which material is made mostly of quartz?

• sulfuric acid

• pencil lead

• plaster of paris

• window glass

Silicate minerals contain the elements silicon and oxygen. Which list contains only silicate materials?

• graphite, talc, and selenite gypsum

• potassium feldspar, quartz and amphibole

• calcite, dolomite, and pyroxene

• biotite mica, fluorite and garnet

Which mineral is the major component of drywall?

• talc

• calcite

• muscovite mica

• selenite gypsum

Which mineral is commonly used as an abrasive

• garnet

• halite

• sulfur

• graphite

Which characteristic do samples of the mineral pyroxene normally exhibit?

• yellow to amber color

• bubbling in hydrochloric acid

• cleaves at 56 degrees and 124 degrees

• hardness 5 to 6

The minerals talc, muscovite mica, quartz, and olivine are similar because they

• have the same hardness

• are the same color

• contain silicon and oxygen

• break along cleavage planes

Which mineral is commonly mined as a source of the element lead (Pb)?

• galena

• quartz

• magnetite

• gypsum

Which mineral is composed of Calcium and Fluorine?

• Amphiboles

• Calcite

• Hematite

• Fluorite