Mineral Quiz

What is the hardness range of Graphite?

• 1-2

• 2.5-3

• 3-4

• 4-5

Which mineral has a metallic luster and is used in pencil lead and lubricants?

• Graphite

• Galena

• Magnetite

• Pyrite

What is the chemical composition of Galena?

• PbS

• Fe3O4

• FeS2

• C

Which mineral is known for its green-black streak and is also called "fool's gold"?

• Pyrite

• Hematite

• Magnetite

• Galena

What is the use of Hematite?

• Ore of iron, jewelry

• Pencil lead, lubricants

• Food additive, melts ice

• Ceramics, paper

Which mineral has a greasy feel and is used in ceramics and paper?

• Talc

• Sulfur

• Selenite gypsum

• Muscovite mica

What is the chemical composition of Selenite gypsum?

• CaSO4·2H2O

• NaCl

• K(Mg,Fe)3AlSi3O10(OH)2

• Mg3Si4O10(OH)2

Which mineral is colorless to white and has a salty taste?

• Halite

• Calcite

• Dolomite

• Fluorite

What is the distinguishing characteristic of Calcite?

• Bubbles with acid, rhombohedral cleavage

• Cubic cleavage, salty taste

• Flexible in thin sheets

• Red-brown streak

Which mineral is used in building stones and bubbles with acid when powdered?

• Dolomite

• Fluorite

• Quartz

• Olivine