296-340 Rock and Mineral Resources: Lab Outline
Steven Dutch, Natural and Applied Sciences, University
of Wisconsin - Green Bay
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- Potassium Feldspar
- Plagioclase Feldspar
- Biotite Mica
- Muscovite Mica
Identifying Minerals in Rocks
- Identifying an Unknown Mineral
- Crystal Form
- Geologic Setting
- A Useful Strategy
- If you see hoof prints, think horses, not zebras. Finding a rare
mineral is exciting, but always suspect the most common minerals first.
- Will it Scratch Glass? If so, probably a silicate, next most likely an
- Is it metallic in luster? Probably a sulfide. Sulfur smell confirms
it. If not a sulfide, most likely an oxide, might be a metallic element.
- Does it have good cleavage? If soft, most likely a carbonate.
Carbonates fizz in acid. Could also be a sulfate
- Is it brightly colored? Blue or green suggests copper. Other
brightly-colored minerals are easy to learn.
Identifying and Describing Rocks
Important Igneous Accessory Minerals
Clastic Sedimentary Rocks
- Major Rock Types
- Determination of Maturity
- Unstable components
- Ripple Marks
- Mud Cracks
- Salt Casts
- Burrows and Tracks
Biochemical Sedimentary Rocks
- Important Sedimentary Accessory Minerals
Important Ore Minerals
- Pyrolusite and Psilomelane
- Realgar and Orpiment
- Carnotite and Uraninite
Principal Metamorphic Minerals
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Created 25 July 2001, Last Update
01 September 2011
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