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Mineral Specimens
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Magnatite•Strongly Magnetic
•Form of Iron Ore
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•Hardness 1- 2
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Pyrite•Brass Yellow
•Cubic• “Fool’s Gold”
•Form of Iron Ore
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Chalcopyrite•Yellow Brass Purple “Peacock Ore”
•Form of Iron Ore
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Galena• Gray
•S.G. = 7.5 •Cubic •Form of LEAD Ore
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Limonite• Yellow-brown to rust• Hardness
= 5.5
• Form of Iron Ore
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hematite•Red to Brown Streak
•Form of Iron Ore•Shiny when polished
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Orthoclase•Cleavage Planes at 90
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ORTHOCLASE (cont)
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Quartz•HEXAGONAL 6 Crystals
•Shell-like Fracture
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Citrine
Amethyst
Rose Smoky
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Olivine• Shades of Green
•Peridot birthstone
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Halite•Colorless to White•Salty Taste
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Calcite•Hardness = 3• “Scale” in water•Triclinic
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Calcite may DOUBLE REFRACT
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Gypsum•Hardness = 2
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Talc
•Hardness = 1 •Greasy luster
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Muscovite•Cleavage in flat sheets
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Fluorite•8 sided cleavage•
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Fluorite samples
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Augite•2 Cleavage planes
@ 90 •Black
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Corundum•HEXAGONAL 6 crystals
•Hardness = 9 •Red = RUBY•Other = Sapphire
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Garnet•Reddish Brown•Brittle
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•Shell-like Fracture
Petrified Wood
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•Black
•Cleavage in flat sheets
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•Shell-like Fracture
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minerals
NATURAL LIGHT
UV Light
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