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Lecture 2

GEOL 1030 Lecture Notes - Lecture 2: Magnesium, Mohs Scale Of Mineral Hardness, Calcite

3 pages48 viewsSpring 2017

Department
Geology
Course Code
GEOL 1030
Professor
Hiett, M.
Lecture
2

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Geology Notes Week 2:
Mineral: Naturally occurring, inorganic solid, ordered internal molecular structure, definite
chemical composition.
- Au: Gold
- Ag: Silver
- CaCO3: Calcite
Rock: Solid aggregate of minerals.
Elements: Building blocks of minerals; less than 100 are known (92 occurring).
Atoms: Smallest particle of matter, retain all characteristics of an element.
How atoms are constructed..
Nucleus: center region of an atom. Consists of protons (+), and neutrons (-).
Energy levels/shells: surround nucleus, contain electrons (-).
Atomic number: number of protons in an atom’s nucleus.
Bonding of atoms: form a compound with two or more elements; ions are atoms that gain/lose
electrons (Isotopes have varying number of neutrons).
Minerals...
Physical properties:
- Luster: appearance in reflected light.
- Either metallic, or nonmetallic (sometimes submetallic). Do not associate with
shiny.
- Color: generally unreliable for identification.
- Exotic colorations of certain minerals produce gemstones.
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