Minerals are generally grouped or classified based on their chemical composition. Minerals are generally grouped or classified based on their chemical composition

Minerals are generally grouped or classified based on their chemical composition.

• Minerals are generally grouped or classified based on their chemical composition.

• Most common system is the Dana system.

• Developed by Professor James Dana of Yale University in 1848.

Minerals are usually compounds made of the most common elements in the crust

• Minerals are usually compounds made of the most common elements in the crust

The largest group of minerals

• The largest group of minerals

• Composed of:

• Metal + SiO2
• Example: topaz

The second largest group of minerals

• The second largest group of minerals

• Composed of:

• Metal + CO3
• Example: calcite

Composed of:

• Composed of:

• Metal + O
• Example: magnetite

Composed of:

• Composed of:

• Metal + SO4
• Example: barite

Composed of:

• Composed of:

• Metal + halogen
• Halogens include:
• Chlorine
• Fluorine
• Bromine
• Iodine
• Example: fluorite

Composed of:

• Composed of:

• Metal + S
• Example: chalcocite

Composed of:

• Composed of:

• Metal + PO4
• Example: Apatite

Composed of:

• Composed of:

• Metal + NO3
• Example: Niter

Composed of:

• Composed of:

• A single element
• Example: Gold