# data[].attributes.headline
ACCORDING TO WHAT WE READ HOW ROCKS & FOSSILS ARE FORM?

# data[].attributes.subject
ACCORDING TO WHAT WE READ HOW ROCKS & FOSSILS ARE FORM?

# data[].attributes.body
Out of the minerals we studied which one is the softest mineral to scratch
and which is the hardest?

# data[].attributes.body
- It is the softest mineral on Earth. It is number 1 on the hardness scale so easily scratched by a fingernail.

# data[].attributes.body
BY SAIDA CHRISTOPHERSON

# data[].attributes.body
- Scientists rate the hardness of minerals on a scale of 1 to, depending on how hard they are to scratch.
- The softest mineral, talc has a hardness of 1, the hardness mineral, diamond has a hardness of 10

# data[].attributes.body
- Rubies are gemstones from a mineral called corundum. When the element chromium is trapped within corundum, it turns deep red and becomes a ruby.

# data[].attributes.body
- Gold and silver are minerals. They are soft and can be worked into different shapes to make necklaces, rings, and other jewelry.

# data[].attributes.body
- It is made from shells, coral, and calcite. Limestone can have many fossils.

# data[].attributes.body
- It is composed of rounded fragments cemented together with silt and clay.

# data[].attributes.body
- Formed when mud and clay are pressed together. - May contain fossils.

# data[].attributes.body
- It is made of layers of sand; fine, granite texture where you can see the grains.

# data[].attributes.body
- It's very light. It is formed from gas bubbling in lava that cools quickly. It has many air holes.

# data[].attributes.body
- It has crystals or lines of color. Colored layers may be made smooth and shiny. Limestone can be changed to marble.

# data[].attributes.body
- It is coarse-grained. It has  layers of different minerals
- It has big flakes of crystals.

# data[].attributes.body
- It is a layered rock that is hard to break. It is composed of wavy bands of dark and light layers.

# data[].attributes.body
- It is dark colored volcanic glass. It is formed from rapid cooling of lava.

# data[].attributes.body
- It is dark colored w/very small crystals. Formed from cooled lava.

# data[].attributes.body
- Formed from slow-cooling magma; it is light colored w/large crystals. It's very hard to break.

# data[].attributes.body
-Minerals form as crystals. The shape of a crystal is a clue to identify the mineral

# data[].attributes.body
- Diamond is an extraordinary mineral w/extreme hardness. - Diamond contains carbon as its only element.

# data[].attributes.body
- Some minerals contain only one element. But most minerals are a combination of elements.

# data[].attributes.body
- Rocks are formed when minerals join together. This happens when hot, liquid rock cools and hardens. Other rocks form when pressure from overlying rocks squeezes minerals and particles.

# data[].attributes.body
- First, when soft part of a dead animal or plant decay, the hard parts are covered w/ soft mud.
- Then the shape is preserved when the mud hardens into rock over millions of years.

# data[].attributes.body
- The remains of living organisms that have been preserved in rock.
-They are usually found in sedimentary rock.

# data[].attributes.body
- Rock that has formed formed from layers of sediments (particles) that harden.

# data[].attributes.body
- Rocks that form from pressure and heat that was not enough to melt them.

# data[].attributes.body
- A class of rock that forms from other rocks that have melted, then cooled and hardened.

# data[].attributes.body
- Solid material made of a single substance called element that is found in nature.

# data[].attributes.body
- Solid materials made of several different substances, including various minerals.