Holmquistite
Holmquistite is a lithium magnesium aluminum inosilicate mineral with chemical formula: Li2(Mg, Fe2+)3Al2Si8O22(OH)2. It is consisting of an alkali and a silicate of iron, magnesium,…
Chemistry
Anthophyllite
Anthophyllite is quite a rare stone that belongs to the Amphibole group. It is an amphibole mineral: Mg2Mg5Si8O22(OH)2, magnesium iron inosilicate hydroxide. It’s a magnesium…
Amphiboles
Amphiboles are found principally in metamorphic and igneous rocks. It is the name of an important group of generally dark-colored, inosilicate minerals, forming prism or…
Amicite: Structure and Properties
Amicite has a general formula of K2Na2Al4Si4O16·5(H2O). It is a monoclinic-sphenoidal zeolite mineral containing aluminum, hydrogen, oxygen, potassium, silicon, and sodium. The name is in…
Amesite
Amesite is a mineral with the general formula of Mg2Al2SiO5(OH)4. It is an apple-green chlorite mineral occurring in foliated hexagonal plates Amesite crystallizes in the…
Ameghinite
Ameghinite, formula- Na[H4B3O7] or NaB3O3(OH)4, is a mineral found in Argentina. It is a soft mineral with a Mohs hardness of 2-3. Ameghinite has a…
Amblygonite
Amblygonite is a fluorophosphate mineral, (Li, Na) AlPO4 (F, OH), composed of lithium, sodium, aluminum, phosphate, fluoride, and hydroxide. It is a relatively common phosphate…
Amarantite
Amarantite is an amaranth-red to brownish mineral with the general formula of Fe23+O(SO4)2.7H2O or Fe3+(SO4)OH. 3H2O. It is a rare secondary mineral that occurs in…
Amakinite
Amakinite is a semi-transparent yellow-green hydroxide mineral belonging to the brucite group that was discovered in 1962. Its chemical formula is written as (Fe2+, Mg)(OH)2.…
Alunogen
Alunogen also called feather alum and hair salt is a colorless to white (although often colored by impurities, such as iron substituting for aluminum) fibrous…
Alunite: Properties and Occurrence
Alunite is a hydrated aluminum potassium sulfate mineral, formula KAl3(SO4)2(OH)6. It is a sulfate mineral, first discovered in Monti della Tolfa, Rome, in the 15th…
Aluminite
Aluminite is a hydrous aluminum sulfate mineral with formula: Al2SO4(OH)4·7H2O. It is a hydrous aluminum sulfate, usually occurring in white compact reniform masses. It is…
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