describe in as much detail the mineral on your table!!!
DESCRIPTION
Describe in as much detail the mineral on your table!!!. Characteristics of a Mineral. It occurs naturally It is a solid It has a definite chemical structure Its atoms are arranged in an orderly pattern It is inorganic (was never alive). Mineral Identification. Color Luster Hardness - PowerPoint PPT PresentationTRANSCRIPT
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Describe in as much detail the mineral on your
table!!!
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Characteristics of a Mineral1. It occurs naturally2. It is a solid3. It has a definite chemical structure4. Its atoms are arranged in an orderly
pattern5. It is inorganic (was never alive)
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Mineral Identification»Color»Luster»Hardness»Cleavage/Fracture»Other Characteristics»Streak
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HardnessDefinition: The resistance of a mineral to scratching.
Example: What will happen if I take a steel file to quartz?
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How hard is the mineral that you have at your table?
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Color
Calcite Halite
Why is color not always a good identification?
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Knowing this, is the color of your mineral a good
indication of your mineral?
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LusterDefinition: The property of a mineral that describes the quality or appearance of light
reflected from its surface
Metallic Non-metallic
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What type of luster is your mineral?
• Metallic• Non-metallic–Waxy–Brilliant–Pearly–Dull/Earthy
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Cleavage/Fracture
Cleavage Fracture
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Does your sample have cleavage or is it
fractured?
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S t reakDefinition: The property of a mineral that describes its color in powdered form.
Example: Pyrite is metallic gold in color, but its streak is black. While gold is metallic yellow in color and its streak is yellow.
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Let’s take a look at your mineral and write down
what color it streaks. Does it streak the same color as the
mineral?