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Liz LaRosa 5th grade science 2010

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1 Liz LaRosa 5th grade science 2010
Groups of Minerals Liz LaRosa 5th grade science

2 Mineral Groups - Notes As you view the slides, write your notes into the graphic organizers. Include all the information from each slide into the appropriate boxes. Write neatly and carefully. You will not be expected to memorize this information, but this information will be used as a reference throughout our mineral unit and help you become familiar with the different types of minerals that exist.

3 Mineral Groups Minerals are divided into groups based on their chemical composition The two main groups all minerals can be classified into are: Silicates Nonsilicates

4 Silicates Made of Silicon (Si) and Oxygen (O)
Example: SiO4 Make up 90% of the Earth’s crust Combine with elements such as Aluminum (Al), Iron (Fe), Magnesium (Mg), and Potassium (K)

5 Silicates - Groups Nesosilicates Willemite – Zn2(SiO4)
found in Franklin, NJ Garnet - A3B2(SiO4)3

6 Silicates - Groups Sorosilicates Hemimorphite Zn4(SiO4)

7 Silicates - Groups Cyclosilicates Beryl Be3Al2(Si6O18)

8 Silicates - Groups Inosilicates Hornblende
(Ca,Na)2(Mg,Fe,Al)5(Al,Si)8O22 (OH)2

9 Silicates - Groups Phyllosilicates Talc Mg3(Si4O10)(OH)2

10 Silicates - Groups Tectosilicates Quartz SiO2 Opal SiO2.nH2O

11 Nonsilicates Do not contain a combination of Silicon (Si) and Oxygen (O) in their chemical composition There are 6 groups of nonsilicates: Native Elements Oxides Carbonates Sulfates Halides Sulfides

12 Native Elements Minerals composed of only one element Examples are:
Gold (Au) Copper (Cu) Silver (Ag)*

13 Oxides Elements combine with Oxygen (O)
Some elements that bond with O are Aluminum (Al) and Iron (Fe) Examples of oxides: Chromite - FeCr2O4 Hematite* - Fe2O3

14 Carbonates Contain Carbon (C) and Oxygen (O) in their formulas
Examples: Calcite - CaCO3 Malachite* - Cu2CO3(OH)2

15 Sulfates Contain Sulfur and Oxygen (SO4) Examples: Gypsum - CaSO4.2H2O
Barite - BaSO4 Celestite* - SrSO4

16 Halides Compounds formed when Fluorine (F), Chlorine (Cl), Iodine (I), or Bromine (Br) bond with Sodium (Na), Potassium (K), or Calcium (Ca) Examples: Halite - NaCl Fluorite - CaF2

17 Sulfides Elements bonded with Sulfur (S) such as Lead (Pb), Iron (Fe), or Nickel (Ni) Examples: Galena - PbS Pyrite - FeS2



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