Temperatures here in nature are the same as In the labratory where most rocks must be heated to to temperatures of 800° C to 1200° C before they melt .

In Bowen's reaction series the right branch represents the continuous change of composition.

Three main groups that are classified according to their mineral composition.

Ore minerals that are found in the rocks surrounding intrusions.

A mineral that If it contains a useful substance that can be mined at a profit.

These are the main factors involved in the formation of magna

The left branch of Bowen's series is minerals that undergo abrupt changes during fractional crystallization.

Have low silica contents and very high levels of iron and magnesium, and thus, they are classified as ultramafic rocks.

Not included in common minerals.

When removing ores that are located deep within earths crust.

It is rich in iron and magnesium and therefore melts at higher temperatures than continental crust.

This occurs when crystals settle to the bottom of the magma body, and when liquid magma is squeezed from the crystal mush to form two distinct igneous bodies.

Characterized by large, well formed crystals surrounded by finer grained crystals of the same mineral or different minerals.

Veins of extremely large grained minerals..

Valuable minerals that are prized for their rarity and beauty.

Rocks melt only under certain compositions .

Minerals that form into distinct bands in the order shown in Bowen' s reaction series.

Minerals that form early in the process float in a liquid and have space in which to grow distinct crystal shapes.

Diamonds are a valuable mineral found in rare, ultramafic rocks.

This element is found in the ore bauxite.

It contains more water than basalt and is made up of minerals that melt at lower temperatures.

Only source of platinum in the United States.

A rock that has no visible mineral grains.

These ores of rare elements are found in pegmatites.

Amethyst contain this to make the gem a lovely purple color.