Mineral Families

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How minerals form and different mineral families

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Mineral Families

  1. 1. To Be or Not To Be a Mineral? Copy the list below on a sheet of paper and write either Yes or No next to each substance below you think is or is not a mineral. <ul><li>Diamond </li></ul><ul><li>Wood </li></ul><ul><li>Quartz </li></ul><ul><li>Plastic </li></ul><ul><li>Water </li></ul><ul><li>Sulfur </li></ul><ul><li>Coal </li></ul><ul><li>Gold </li></ul><ul><li>Concrete </li></ul><ul><li>Talc </li></ul><ul><li>Glass </li></ul><ul><li>Salt </li></ul><ul><li>Iron </li></ul><ul><li>Steel </li></ul>
  2. 2. 5 Things That Must Be True for a Substance to be a Mineral <ul><li>Naturally Occurring (NOT manmade) </li></ul><ul><li>Inorganic (not made from living things </li></ul><ul><li>Solid </li></ul><ul><li>Definite Chemical Composition </li></ul><ul><li>Crystalline Pattern </li></ul>
  3. 3. To Be or Not To Be a Mineral? Make any corrections necessary after now knowing the definition of a mineral. <ul><li>Diamond </li></ul><ul><li>Wood </li></ul><ul><li>Quartz </li></ul><ul><li>Plastic </li></ul><ul><li>Water </li></ul><ul><li>Sulfur </li></ul><ul><li>Coal </li></ul><ul><li>Gold </li></ul><ul><li>Concrete </li></ul><ul><li>Talc </li></ul><ul><li>Glass </li></ul><ul><li>Salt </li></ul><ul><li>Iron </li></ul><ul><li>Steel </li></ul>True False True False False True False True False True False True True False
  4. 4. Element vs. Mixture vs. Compound <ul><li>Element : cannot be broken down chemically (made of only one kind of atom) </li></ul><ul><ul><li>Examples : gold, silica, hydrogen </li></ul></ul><ul><li>Mixture : can be broken apart physically </li></ul><ul><ul><li>Examples : air, ocean water </li></ul></ul><ul><li>Compound : can be broken down chemically </li></ul><ul><ul><li>Examples : water (H 2 O), table sugar (C 12 H 22 O 11 ), table salt (NaCl) </li></ul></ul>
  5. 5. How Minerals Form <ul><li>1. Cooling of magma </li></ul><ul><li>2. Evaporation (ex: salt) </li></ul><ul><li>3. Precipitation (ex: calcite) </li></ul><ul><li>4. Existing minerals changed by heat or pressure </li></ul>
  6. 6. Rock-Forming Minerals : the most common minerals that make up most of the rocks in the crust <ul><li>Quartz, feldspar, mica, calcite are common </li></ul>
  7. 7. Mineral “Family” <ul><li>Mineral “families” based on chemical composition (what they are made out of) </li></ul>
  8. 8. 1. Silicates: <ul><li>Contain silicon (Si) and </li></ul><ul><li>oxygen (O) </li></ul><ul><li>silicate is the most common mineral family </li></ul><ul><li>quartz, feldspar, mica, olivine are examples </li></ul>
  9. 9. 2. Carbonates : <ul><li>Carbonate ion (CO3) combines with metal ions </li></ul><ul><li>calcite (CaCO3) calcium carbonate </li></ul><ul><li>dolomite calcium magnesium carbonate </li></ul><ul><li>only carbonates fizz in acid </li></ul>
  10. 10. 3. Oxides: <ul><li>Oxygen plus any element other than silicon </li></ul><ul><li>hematite (FeO2)and magnetite (Fe2O3) are iron oxides </li></ul><ul><li>oxides are important sources of iron ore </li></ul>
  11. 11. 4. Sulfides <ul><li>Metal element combined with sulfur </li></ul><ul><li>pyrite (FeS2) is “fool’s gold,” an iron sulfide </li></ul>
  12. 12. 5. Native Elements <ul><li>Elements uncombined </li></ul><ul><li>Gold (Au), Silver (Ag), Copper (Cu), etc. </li></ul>

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