brianna power point

ALL ABOUT ROCKSALL ABOUT ROCKS

By BriannaBy Brianna

CalciteCalcite

Most formations in limestone caves are Most formations in limestone caves are made from calcite.made from calcite.

CALCITE is found in many colors, green, CALCITE is found in many colors, green, blue, blue,

red, and orange .red, and orange .

Its hardness is 3 on the Moh’s Scale.Its hardness is 3 on the Moh’s Scale.

I like it because of the pretty colors.I like it because of the pretty colors.

AMETHYSTAMETHYST

• IT IS A VERY COOL ROCK.• IT IS THE SECOND MOST ABUNDANT MINERAL IN THE EARTH’S

continental crust, after feldspar. It is purple.

Amber quartzAmber quartz

• You can scratch it with a nail.

• You can make a mark when it is scratched with a nail.

• It is clear and yellow.• I got it at Burnie’s

Rock Shop.

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