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Magnesiocummingtonite

Index Magnesiocummingtonite

Magnesiocummingtonite is the magnesium rich endmember of the cummingtonite-grunerite series of the amphibole group of minerals, with the following composition: (Mg)7Si8O22(OH)2. [1]

7 relations: Amphibole, Cummingtonite, Grunerite, Magnesium, Manganese, Refractive index, Specific gravity.

Amphibole

Amphibole is an important group of generally dark-colored, inosilicate minerals, forming prism or needlelike crystals, composed of double chain tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures.

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Cummingtonite

Cummingtonite is a metamorphic amphibole with the chemical composition (Mg,Fe2+)2(Mg,Fe2+)5Si8O22(OH)2, magnesium iron silicate hydroxide.

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Grunerite

Grunerite is a mineral of the amphibole group of minerals with formula Fe7Si8O22(OH)2.

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Magnesium

Magnesium is a chemical element with symbol Mg and atomic number 12.

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Manganese

Manganese is a chemical element with symbol Mn and atomic number 25.

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Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

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Specific gravity

Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

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References

[1] https://en.wikipedia.org/wiki/Magnesiocummingtonite

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