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MINERALS
MINERALS OF THE EARTH
10
Science
6th Grade
02/15/2012

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Term
MINERAL
Definition

A mineral is an element or chemical compound that has been formed over time due to pressure or heat. A mineral is usally crystallized.

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Term

 

Inorganic

 

Definition

NOT having natural growth. An artifical substance. It does not contain carbon which all living things have.[image]

 

Term

 

Crystal

 

Definition

A solid in which the atoms are arranged in a pattern that repeats again and again.

 

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Term
Hardness
Definition
Hardness is measured by the resistance which a smooth surface[image]
Term

 

Streak

 

Definition
The color of a mineral’s powder[image]
Term

 

Luster

 

Definition
The way a mineral reflects light from its surface. [image]
Term

 

Fracture

 

Definition
Fracture is how the mineral breaks once the tenacious limit has been exceeded. so basicly where the fracture was and how from bending or being crushed it iis the description of the break.[image]
Term

Density

Definition
physical property of matter each substance has a unique density that is known to scientests so they can find out what a substance is.[image]
Term

 Gem stone

Definition
A precious or semiprecious stone. It is mainly[image] cut, polished, and used in jewlery
Term
Cleavage
Definition

To split or separate along a natural line of division. like if there is a small crack that would be were you would find a cleavage if broken apart.

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