Groups of Minerals Liz La Rosa 5 th

Groups of Minerals Liz La. Rosa 5 th grade science www. middleschoolscience. com 2010

Mineral Groups Minerals are divided into groups based on their chemical composition Three groups ▪ Silicates (most abundant) ▪ Carbonates ▪ Oxides

Silicates Made of Silicon (Si) and Oxygen (O) ▪ Example: Si. O 4 Make up 90% of the Earth’s crust Combine with elements such as Aluminum (Al), Iron (Fe), Magnesium (Mg), and Potassium (K)

Silicates - Groups Willemite – Zn 2(Si. O 4) ▪ found in Franklin, NJ Garnet - A 3 B 2(Si. O 4)3

Carbonates Contain Carbon (C) and Oxygen (O) in their formulas Examples: Calcite - Ca. CO 3 Malachite* - Cu 2 CO 3(OH)2

Oxides Elements combine with Oxygen (O) Some elements that bond with O are Aluminum (Al) and Iron (Fe) Examples of oxides: Chromite - Fe. Cr 2 O 4 Hematite* - Fe 2 O 3

Classify these Minerals. . . Azurite - Cu 3(CO 3)2(OH)2 Carbonate!

Classify these Minerals. . . Corindon: ▪ Al 2 O 3 Oxide

Classify these Minerals. . . Talc ▪ Mg 3(Si 4 O 10)(OH)2 Silicate!

Classify these Minerals. . . Quartz ▪ Si. O 2 Silicate Opal ▪ Si. O 2. n. H 2 O

Classify these Minerals. . . Magnetite: ▪ Fe 3 O 4 Oxide!

Classify these Minerals. . . Cuprite ▪ Cu 2 O Oxide!

Classify these Minerals. . . Hemimorphite ▪ Zn 4(Si. O 4) Silicate!

Classify these Minerals. . . Hornblende ▪ (Ca, Na)2(Mg, Fe, Al)5(Al, Si)8 O 22 (OH)2 Silicate!

Classify these Minerals. . . Calcite - Ca. CO 3 Carbonate!

Classify these Minerals. . . Beryl ▪ Be 3 Al 2(Si 6 O 18) Silicate!

Classify these Minerals. . . Smithsonite ▪ Zn. CO 3 Carbonate!

Ore vs. Rock Forming Minerals All minerals form rocks BUT! Some of these minerals also have. . . $$$

Ore vs. Rock Forming Minerals Ore Forming Pyrite Galena Sulfur Hematite Graphite Magnetite

Ore vs. Rock Forming Minerals Rock Forming Quartz Feldspar Mica Calcite