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Prismatine is an orthorhombic-dipyramidal mineral containing aluminium, boron, fluorine, hydrogen, iron, magnesium, oxygen, and silicon. It forms a solid solution series with kornerupine . [ 4 ]
Pristane is a natural saturated terpenoid alkane obtained primarily from shark liver oil, from which its name is derived (Latin pristis, "shark").It is also found in the stomach oil of birds in the order Procellariiformes and in mineral oil and some foods. [2]
These likely took less than three days to reach the surface from their place of origin, and show pristine composition and texture. Their characteristics show that they were little altered from their formation 1.6 to 1.8 billion years ago, other than some reheating during the opening of the Rio Grande rift. [5]
The Pilbara Craton is one of only two pristine Archaean 3.8–2.7 Ga (billion years ago) crusts identified on the Earth, along with the Kaapvaal Craton in South Africa. The youngest rocks are 1.7 Ga old in the historic area assigned to the Craton. [1] Both locations may have once been part of the Vaalbara supercontinent or the continent of Ur.
The pristine volcanic mineralogy of komatiites is composed of forsteritic olivine (Fo90 and upwards), calcic and often chromian pyroxene, anorthite (An85 and upwards) and chromite. A considerable population of komatiite examples show a cumulate texture and morphology.
Millerite, when found in enough concentration, is a very important ore of nickel because, for its mass as a sulfide mineral, it contains a higher percentage of nickel than pentlandite. This means that, for every percent of millerite, an ore contains more nickel than an equivalent percentage of pentlandite sulfide.
Proustite is a sulfosalt mineral consisting of silver sulfarsenide, Ag 3 As S 3, known also as ruby blende, light red silver, arsenic-silver blende or ruby silver ore, and an important source of the metal.
Aerinite (Ca 4 (Al,Fe,Mg) 10 Si 12 O 35 (OH) 12 CO 3 ·12H 2 O) is a bluish-purple inosilicate mineral. It crystallizes in the monoclinic system and occurs as fibrous or compact masses and coatings. It has a dark, vitreous luster, a specific gravity of 2.48 and a Mohs hardness of 3.