Presentation is loading. Please wait.

Presentation is loading. Please wait.

Minerals Section 2.2. A mineral is a naturally occurring, inorganic solid with an orderly crystalline structure and a definite chemical composition. In.

Similar presentations


Presentation on theme: "Minerals Section 2.2. A mineral is a naturally occurring, inorganic solid with an orderly crystalline structure and a definite chemical composition. In."— Presentation transcript:

1 Minerals Section 2.2

2 A mineral is a naturally occurring, inorganic solid with an orderly crystalline structure and a definite chemical composition. In order for a material to be considered a mineral it must have the following characteristics:In order for a material to be considered a mineral it must have the following characteristics: Naturally Occurring – not man madeNaturally Occurring – not man made Solid Substance – solid in normal temp.Solid Substance – solid in normal temp. Orderly crystalline structure – atoms arranged in an orderOrderly crystalline structure – atoms arranged in an order Definite chemical composition – has a specific chemical formulaDefinite chemical composition – has a specific chemical formula Generally considered inorganic – not livingGenerally considered inorganic – not living

3 Section 2.2 Which of the following items are minerals and which are not?Which of the following items are minerals and which are not? SaltCoalSilver SteelSugarGold Glass WoodConcrete SnowflakeSeashellBone

4 Section 2.2 How minerals form:How minerals form: Crystallization from magma – as magma cools, elements combine to form minerals ( Quartz, Feldspar, Muscovite)Crystallization from magma – as magma cools, elements combine to form minerals ( Quartz, Feldspar, Muscovite) Precipitation – as Earth’s water evaporate dissolved substances can react to form minerals (Halite & Calcite)Precipitation – as Earth’s water evaporate dissolved substances can react to form minerals (Halite & Calcite) Pressure & Temperature – when minerals are exposed to pressure or temp their atomic structure can change to form new minerals (Talc & Muscovite)Pressure & Temperature – when minerals are exposed to pressure or temp their atomic structure can change to form new minerals (Talc & Muscovite) Hydrothermal solutions – extremely hot solutions come into contact with minerals and cause chemical reactions that form new minerals (Bornite & Chalcopyrite)Hydrothermal solutions – extremely hot solutions come into contact with minerals and cause chemical reactions that form new minerals (Bornite & Chalcopyrite)

5 Crystallization of Magma

6 Mineral Groups Minerals are classified into groups based on their chemical compositionMinerals are classified into groups based on their chemical composition SilicatesSilicates Most common group of mineralsMost common group of minerals Contain Silicon (Si) and Oxygen (O)Contain Silicon (Si) and Oxygen (O) The structure is a tetrahedron, which consists of one silicon atom and four oxygen atomsThe structure is a tetrahedron, which consists of one silicon atom and four oxygen atoms

7 Mineral Groups CarbonatesCarbonates Second most common mineralSecond most common mineral Contain Carbon (C), Oxygen (O) and one or more other metallic elementsContain Carbon (C), Oxygen (O) and one or more other metallic elements Calcite (CaCO 3 ) is the most common carbonateCalcite (CaCO 3 ) is the most common carbonate Limestone & Marble contain carbonatesLimestone & Marble contain carbonates OxidesOxides Contain Oxygen (O) and one or more other elements, usually metalsContain Oxygen (O) and one or more other elements, usually metals Corundum (Al 2 O 3 ) and Hematite (Fe 2 O 3 ) are examplesCorundum (Al 2 O 3 ) and Hematite (Fe 2 O 3 ) are examples

8 Mineral Groups Sulfates & SulfidesSulfates & Sulfides Contain Sulfur (S)Contain Sulfur (S) Can form from mineral rich waters or thermal solutionsCan form from mineral rich waters or thermal solutions Pyrite (FeS 2 ) & Galena (PbS) are examplesPyrite (FeS 2 ) & Galena (PbS) are examples

9 Mineral Groups HalidesHalides Contain a halogen ion plus one or more other elementsContain a halogen ion plus one or more other elements Includes the elements Fluorine (F) & Chlorine (Cl)Includes the elements Fluorine (F) & Chlorine (Cl) Halite (NaCl) is an exampleHalite (NaCl) is an example Native ElementsNative Elements Are elements in their pure formAre elements in their pure form Gold (Au), Silver (Ag) and Copper (Cu) are examplesGold (Au), Silver (Ag) and Copper (Cu) are examples Some form from hydrothermal solutionsSome form from hydrothermal solutions

10 Mineral Groups CopperCopper


Download ppt "Minerals Section 2.2. A mineral is a naturally occurring, inorganic solid with an orderly crystalline structure and a definite chemical composition. In."

Similar presentations


Ads by Google