Chemistry:Osialfecanakmg

Osialfecanakmg is an acronym made up of the chemical symbols of the 8 most abundant elements in the Earth's crust. Because they are so important, geologists sometimes refer to the elements named below as the BIG 8.

Element Volume proportions are:

• Oxygen (O): 46.6%
• Silicon (Si): 27.7%
• Aluminum (Al): 8%
• Iron (Fe): 5%
• Calcium (Ca): 3.6%
• Sodium (Na): 2.8%
• Potassium (K): 2.6%
• Magnesium (Mg): 2.1%