A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate, especially with respect to the requirement a valid species be abiogenic, and to a lesser extent with regard to it having an ordered atomic structure. The study of minerals is called mineralogy.
There are over 5,300 known mineral species; over 5,070 of these have been approved by the International Mineralogical Association (IMA). The silicate minerals compose over 90% of the Earth's crust. The diversity and abundance of mineral species is controlled by the Earth's chemistry. Silicon and oxygen constitute approximately 75% of the Earth's crust, which translates directly into the predominance of silicate minerals. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish various species, and these properties in turn are influenced by the mineral's geological environment of formation. Changes in the temperature, pressure, or bulk composition of a rock mass cause changes in its minerals.
Over Costa Rica
Flown around with infantry
For the closing era
Taste of the life and sympathy
Set the view across
The ocean floor without the sea
Hate to be so lonely
Hate to be in the wrong end of this
Well, I know
If only I had always agreed
Desire all, desire all, my demons
Well, I know
if only I had always agreed
Desire all, desire all, my demons
Through the raging weather
Helped across the border stream
Stumbling over and over
Stray the land that used to breed
Set the view across
The open sky deprived of scene
Hate to be so lonely
Hate to be in the wrong end of this
Well, I know
If only I had always agreed
Desire all, desire all, my demons
Well, I know
If only I had always agreed