Minerals Flashcards

1
Q

________ are the solid, inorganic substances that the Earth’s crust is made of

A

minerals

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2
Q

Minerals are usually c___________ in shape

A

crystalline (like crystals)

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3
Q

What are the two ways that minerals typicallly form?

A
  1. When magma cools

2. When a solution (minerals+liquid) evaporates, leaving just the solid mineral behind

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4
Q

What are the characteristics that scientists use to classify minerals?

A

Color, Luster (shine), Cleavage/Fracture (how it breaks), and Hardness (how difficult it is to scratch)

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5
Q

What are the three main types of useful minerals?

A

Rare/precious (like diamonds), ores (what we turn into metal), and silicates (like sand/soil)

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