EARTHSC 1G03 Lecture Notes - Lecture 5: Silicate Minerals, Talc, Pyrite
11 Sep 2018
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Inorganic: form from inorganic processes, crystallize from magma, grow at depths in earth"s interior, precipitate from aqueous solution. The earth"s crust is made up of rocks, and all rocks are made up of one or more types of minerals. It is made up of orthoclase feldspar, plagioclase feldspar, biotite, and quartz. There are called constituent minerals: minerals are composed of chemical elements such as carbon, oxygen, silicon, magnesium, etc, elements cannot be further subdivided by ordinary chemical and physical means. In total, we know 92 naturally occurring elements. There are different types of this mineral (ex. It has to do with bonds and how things are arranged: there are different styles of cleavage, some can be peeled apart (ex. Mica which has 1 plane of cleavage: some break into two halves, some will naturally break into cubes (ex. If there is no plane of weakness, there will be a fracture and randomness to how it breaks (ex.
