Mineral Specimens

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Mineral Specimens
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Magnatite
Magnetite

• Strongly Magnetic
• Form of
• Iron Ore

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?
Graphite

• Hardness 1- 2

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Pyrite

• Brass Yellow
• Cubic
• Fools Gold
• Form of
• Iron Ore

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Chalcopyrite

• Yellow Brass Purple
• Peacock
• Ore
• Form of
• Iron Ore

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Galena
Shiny

• 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
Hematite

• Red to Brown Streak
• Form of Iron Ore
• Shiny when polished

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Orthoclase
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
Olivine

• Shades of Green
• Peridot birthstone

Glassy
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Halite
Halite

• Colorless to White
• Salty Taste

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Calcite
Calcite

• Hardness 3
• Scale in water
• Triclinic

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Calcite may DOUBLE REFRACT
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Gypsum
Gypsum

• Hardness 2

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Talc
Talc

• Hardness 1
• Greasy luster

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Muscovite
Muscovite

• Cleavage in flat sheets

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Fluorite
Fluorite

• 8 sided cleavage

Fluorescent
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Fluorite samples
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Augite

• 2 Cleavage planes
• _at_ 90?
• Black

Augite
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Corundum
Corundum

• HEXAGONAL 6 crystals
• Hardness 9
• Red RUBY
• Other Sapphire

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Garnet
Garnet

• Reddish Brown
• Brittle

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Jasper
Petrified Wood

• Shell-like Fracture

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Biotite

• Black
• Cleavage in flat sheets

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Apatite

• Shell-like Fracture

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Fluorescent
minerals
UV Light
NATURAL LIGHT
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