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MineralsMinerals

Minerals

Minerals

Minerals are neither plant nor animal and occur naturally.

Minerals are the building blocks of rocks.

There are four ways we identify minerals Color, luster, streak, and hardness.

Mineral Color

Color is one way we identify minerals Problems:

Some minerals can be more than one color Many minerals may be the same color.

Quartz Fluorite

Minerals

Streak Streak color is

sometimes different than the solid color.

Usually the streak is the same.

Minerals

Hardness Anything that scratches a mineral is

harder than the mineral.

Mr. Scott will talk about this page.

Igneous Rocks Fire Made

Cooled magma Cools slowly – big grains (crystals)

Cools quickly – tiny grains (crystals)

Cools instantly – no grains (glass)

Sedimentary Rocks

Rocks formed from bits or layers of rocks cementer together.

When rocks are weathered they break into tiny pieces.

When the tiny pieces are eroded they eventually get deposited. Sediments are deposited rock pieces. Sediments – water – air = rocks

Metamorphic Rock

A rock that has been changed from one kind of rock into another kind of rock. Heat & pressure Creates mineral bands

Rock Cycle