Are you ready to rock?

By: Alicia Crespo

What is a rock?

A rock is a solid material made of minerals. Some are formed on the surface of earth and some are formed deep near it's core.



1.) Crystals form quickly. Form outside a volcano.

2.) Texture- Fine; Crystal size-Non-crystalline

3.) Non-vesicular

4.) Density- Low; Color-Lighter; Mineral composition- Felsic

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Organic or Inorganic: Inorganic

Texture: Clastic

Grain Size: Pebbles, Cobbles, and/or boulders embedded in sand, silt and/or clay.

Composition:Mostly quartz, feldspar, and clay minerals.

Comments: Rounded fragments

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Texture: Foliated

Grain Size: Fine

Composition: Mica

Comments: Low-grade metamorphism of shale.

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Rock Cycle

The Rock Cycle is a model showing how rocks and sediments change over time.
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