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