Name that Rock or Mineral

What are rocks and minerals?

Minerals are naturally occuring inorganic compounds ("non-living material").

Rocks are extensive mineral bodies composed of one or more minerals in different amounts, which form part of the earth's crust.

Activity:

Use the picture and clues to find your answer. Record your findings on the hidden message sheet.

Hint: Use your Earth Science Reference tables.

Rock	Images	Clues	Answers
1		Igneous Rock Intrusive Crystal size (1 mm to 10 mm) Coarse Only made of olivine	?
2		Sedimentary rock Chemically/organically formed Crystalline Made from Halite	?
3		Sedimentary rock Inorganic It is fine to coarse Grain size 0.006 to 0.2 cm Clastic/ fragmental	?
4		Igneous rock Low density Felsic Usually black Volcanic Glassy	?
5		Igneous rock Intrusive Medium color, density, composition It is coarse Has only a small amount of Quartz	?
6		Mineral Luster is nonmetallic Hardness is 6.5 Color is green or gray brown Is used in furnace bricks and jewelry	?
7		Mineral Luster is metallic Hardness is 6.5 It is brassy yellow It has a green-black streak It is also called fool's gold	?
8		Sedimentary rock Fragmental May split Grain size less than 0.0004 cm	?
9		Igneous rock Low density Light Very coarse Felsic Made with quartz and potassium feldspar	?
10		Mineral Luster is nonmetallic Hardness is 6.5 - 7.5 Color is dark red to green Often seen as red glassy grains	?