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Minerals
Vocabulary for Minerals and their Properties
44
Geology
7th Grade
03/12/2008

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Term
Luster
Definition
The way light reflects off of a mineral's surface.
Term
Streak
Definition
The color of a mineral's powder.
Term
Hardness
Definition
A mineral's resistance to being scratched
Term
Cleavage
Definition
when a mineral breaks in smooth or flat surfaces.
Term
Atom
Definition
smallest particle of an element
Term
Fracture
Definition
A mineral breaks in a jagged or grainy way.
Term
Color  
Definition
The most unreliable property of a mineral. Many minerals come in many different colors.
Term
Crystal
Definition
Atoms that arrange them selves in a pattern. All minerals have a specific crystal structure.
Term
Hydrochloric Acid (HCl)
Definition
Reacts with CaCo3 (Calcite). This is a chemical reaction.
Term
5 properties that define a mineral
Definition
1) inorganic
2) solid
3) crystalline structure (atoms arranged in patterns)
4) naturally occurring
5) definite chemical composition
Term
Element
Definition
a substance that cannot be broken down into smaller substances
Term
Compound  
Definition
a combination of 2 or more elements
Term
chemical symbol
Definition
one or two letter abbreviation for an element
Term
chemical formula
Definition
abbreviation for a compound
Term
3 ways a mineral forms  
Definition
1) cooling magma/lava
2) evaporation
3) hot water solution that cools
Term
2 most common elements in the earth's crust
Definition
oxygen and silicon
Term
All rocks are made of __________________.
Definition
minerals
Term

Hardest mineral on the Mohs Scale  

10 

Definition
Diamond
Term

Softest mineral on the Mohs

Definition
Talc
Term
Hematite
Definition
Iron Oxide

major ore of iron
Term
Galena
Definition
major ore of lead
Term
Pyrite
Definition
Fools gold
Term
Muscovite and Biotite
Definition
electrical insulators
Term
Calcite
Definition
antacids, optical instruments, limestone/marble
Term
Graphite
Definition
Carbon

Used in pencils
Term
Halite
Definition
Cubic Crystal Structure

Salt
Term
Quartz
Definition
in sand and used to make glass
Term
Chalcopyrite
Definition
most important copper ore
Term
Sulfur
Definition
plant sprays and medicated shampoos
Term
Talc
Definition
Baby powder and gymnastics chalk
Term
Magnetite
Definition
most magnetic mineral
Term
Gypsum
Definition
plaster products (drywall)
Term
Fe
Definition
iron

I will iron for a fee.
Term
Si
Definition
silicon
Term
O
Definition
oxygen
Term
Pb
Definition
lead

Pencil Body
Term
H
Definition
hydrogen
Term
S
Definition
sulfur
Term
Na
Definition
Sodium

Na I do not want any more salt (sodium)
Term
Cu
Definition
copper

See you later copper
Term
C
Definition
carbon
Term
Ca
Definition
calcium
Term
K
Definition
Potassium
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