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Assignment: Sedimentary Rocks Presentation

Rock Name

Contains

Where It’s Found and How It Formed

Special Features

Picture

(website link)

Chert

Fine quartz crystals and remains of ancient sea sponges and ocean animals

Extremely rare, found near water

Sandstone

Quartz particles and sand grains

As layers in areas such as the Grand Canyon

Mudstone

Clay minerals, quartz, mica

Deep in the ocean or the bottom of a lake

Geode

Rock, minerals calcite, and quartz

Can form in any buried opening, including bubbles in igneous rocks, under tree roots, or even in animal burrows

(your choice)

 
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