GEOL 1312

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GEOL 1312
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Class 2 Elements Minerals

• Class updates
• Reading Sections 2.1-2.6
• Course website
• http//www.geo.utep.edu/..
• ..pub/jasper/geol_1312
• Labs Dont forget to enroll by 8/27

• Todays topics
• Atoms elements
• Mineral types properties

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From Big to Small
Rocks
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What is a Mineral?
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Are These Minerals?

• Synthetic gemstones
• Amber
• Pearls
• Diamond
• Ice
• Glass

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What is an Element?
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Important Elements in the Crust
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What is an Atom?

• Particle Mass Charge
• Proton 1 1
• Neutron 1 0
• Electron 0 -1

nucleus
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Atom Review

• Is the nucleus positively or negatively charged?
• What gives the nucleus its charge?
• If an atom has a neutral charge (no charge), how
• many electrons protons does it have?

• Particle Mass Charge
• Proton 1 1
• Neutron 1 0
• Electron 0 -1

nucleus
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Atoms Elements
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Ions
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Ions
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Compounds
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Other Bonds
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Compounds Minerals
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Crystals
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Crystal Shapes
fluorite
calcite
cubic
dodecahedron
octahedral
garnet
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Physical Properties of Minerals

• Crystal habit (shape)
• Cleavage fracture
• Hardness
• Specific gravity
• Color
• Streak
• Luster
• Taste
• Reaction to Acid
• Other

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Crystal Habit
Quartz elongated crystals
Quartz no characteristic shape
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Cleavage Fracture
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Hardness
(hardest)
(softest)
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Specific Gravity
Quartz 2.7
Au 19
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Color
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Streak
hematite
pyrite
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Luster
Quartz (non-metallic glassy)
Geranium (metallic)
Gypsum (non-metallic pearly)
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Other
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Mineral Classes
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Silicates (Si O)
O
Si
O
O
O
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Silicates
quartz
feldspar
biotite
amphibole
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Carbonates
dolostone
limestone
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