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This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties.
90 Zr, 91 Zr, 92 Zr and 94 Zr are stable, although 94 Zr is predicted to undergo double beta decay (not observed experimentally) with a half-life of more than 1.10×10 17 years. 96 Zr has a half-life of 2.34×10 19 years, and is the longest-lived radioisotope of zirconium. Of these natural isotopes, 90 Zr is the most common, making up 51.45% of ...
Some "minerals" are essential for life, but most are not. [1] [2] [3] Minerals are one of the four groups of essential nutrients; the others are vitamins, essential fatty acids, and essential amino acids. [4] The five major minerals in the human body are calcium, phosphorus, potassium, sodium, and magnesium. [2]
Thorium only occurs as a minor constituent of most minerals, and was for this reason previously thought to be rare. [90] [91] In fact, it is the 37th most abundant element in the Earth's crust with an abundance of 12 parts per million. [92]
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The largest grouping of minerals by far are the silicates; most rocks are composed of greater than 95% silicate minerals, and over 90% of the Earth's crust is composed of these minerals. [102] The two main constituents of silicates are silicon and oxygen, which are the two most abundant elements in the Earth's crust.
bytownite (70 to 90) (NaSi,CaAl)AlSi 2 O 8; anorthite (90 to 100) CaAl 2 Si 2 O 8; Intermediate compositions of exsolve to two feldspars of contrasting composition during cooling, but diffusion is much slower than in alkali feldspar, and the resulting two-feldspar intergrowths typically are too fine-grained to be visible with optical microscopes.
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