shelby power point

ROCKSROCKS

BY SHELBY REEDERBY SHELBY REEDER

QUARTZQUARTZ

Quartz is made of silicon and Quartz is made of silicon and oxygen.oxygen.

There are many varieties.There are many varieties. It is a mineral. It is usually 6-sided.It is a mineral. It is usually 6-sided. I got my quartz from our classroom.I got my quartz from our classroom.

granitegranite

• The hardness is between 6 and 7.

• Granite is an igneous rock.

• It was found in a box.

• I like it because it has cool colors.

SandstoneSandstone

Sandstone is a sedimentary rock.Sandstone is a sedimentary rock.

Sandstone has a rough texture.Sandstone has a rough texture.

It was brown, and it cracked in half easily.It was brown, and it cracked in half easily.

I found it at a park.I found it at a park.

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