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Bellwork 10-28-13 Obj: SWBAT explain the properties that are used in classify minerals. 1.What comes to mind when you see this picture? 2.List as many minerals(at LEAST 2) that you can think of.(example: gemstones)
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Bellwork 10-4-12 Obj: SWBAT explain the properties that are used in classify minerals. 1.What are the five characteristics that a mineral have? 2.What are three Id properties we talk about yesterday.
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What is a mineral? 1. Must be naturally occurring 2. Must be a solid 3. Must have a chemical composition 4. Cannot be organic What does that mean? 5. Have a defined crystalline structure
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How do we ID a mineral? With a partner developed some ways that you could categorize or separate different minerals?
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How do we ID a mineral? Scientists use mineral properties to ID minerals,Some of these properties include: Color Streak Cleavage Luster Hardness
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Mineral Color Describe the color of the mineral Azurite is blue Corundum (ruby) is red
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Mineral Streak Describe the color of the streak on a piece of porcelain. Hematite has a RED streak
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Mineral Cleavage Cleavage is the tendency of a mineral to cleave, or break, along flat, even surfaces. Salt has CUBIC cleavage Gypsum has ONE plane of cleavage
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Mineral Luster Luster is used to describe how light is reflected from the surface of a mineral. Luster can be: Metallic Earthy Glassy
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Mineral HARDNESS Hardness is a measure of the resistance of a mineral to being scratched. -It is measured on a scale from 1 to 10 -Your finger nail has a hardness of 2-2.5 -A copper penny has a hardness of 3.5 -A iron nail has a hardness of 4.5 -Glass has a hardness of 5.5 -Minerals that are harder can SCRATCH other softer minerals
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Bellwork 11-4-13 Obj: SWBAT explain the properties that are used in classifying minerals and apply the hardness test. 1. Is Jell-O a mineral? What classifies a mineral? 2. What are the 5 properties of minerals we have taken notes on, explain each.
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110 Mineral Properties: The Hardness scale Talc Diamond
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#1 on the hardness scale -Talc and graphite have a hardness of one.
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#2 on the hardness scale -Gypsum has a hardness of 2 -Gypsum is used for drywall (sheetrock)
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#3 on the hardness scale -Calcite and Native Copper have a hardness of 3. -Calcite is used to make concrete!
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#4 on the hardness scale -Fluorite has a hardness of 4 Fluorite is used to make the active ingredient in toothpaste (NaF)
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#5 on the hardness scale -Apatite and hematite have a hardness of 5 Hematite beads Your teeth are made of hydroxyl apatite!
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#6 on the hardness scale -Feldspar and Pyrite have a hardness of 6 *Chalcopyrite is an important ore of Copper
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#7 on the hardness scale Quartz has a hardness of 7, and is used to make glass, watches, lasers, abrasives, and many other things!
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#8 on the hardness scale Topaz has a hardness of 8 Topaz occurs in many colors and is used as a gemstone (Novembers birthstone)
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#9 on the hardness scale Corundum has a hardness of 9. Corundum is the gemstone ruby and sapphire, it is also used to make sandpaper and abrasives
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#10 on the hardness scale -Diamond is the ONLY mineral to have a hardness of 10.
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