Akatoreite: Properties and Occurrence
Akatoreite {(Mn2+, Fe2+)9 Al2 [(OH)3|His4O13]} is a mineral found in New Zealand. It was named after the place it was initially discovered – Akatore Creek,…
Chemistry
Akaganeite: Properties and Occurrence
Akaganeite is an iron(III) oxide-hydroxide / chloride mineral with formula: Fe3+O(OH,Cl). It is a chlorine mineral/iron (III) oxide-hydroxide that is formed by the weathering pyrrhotite.…
Ajoite: Occurrence and Properties
Ajoite is a hydrated sodium potassium copper aluminum silicate hydroxide mineral. Ajoite has the chemical formula (Na,K)Cu7AlSi9O24(OH)6.3H2O and minor Mn, Fe and Ca are usually…
Aikinite: Identification and Occurrence
Aikinite is a sulfide mineral of lead, copper, and bismuth with formula PbCuBiS3. It forms black to grey or reddish brown acicular orthorhombic crystals with…
Ahlfeldite
Ahlfeldite, formula ((Ni,Co)[SeO3]·2H2O) is a mineral of secondary origin. It’s named after Friedrich Ahlfeld (1892–1982), a German-Bolivian mining engineer and geologist. Its type locality is…
Aheylite: Identification and Properties
Aheylite is a rare phosphate mineral with formula (Fe2+Zn)Al6[(OH)4|(PO4)2]2·4(H2O). It was named after Allen V. Heyl, an economic geologist associated with the U.S. Geological Survey.…
Aguilarite: Identification and Occurrence
Aguilarite is an uncommon sulfosalt mineral with formula Ag4SeS. It was described in 1891 and was named after Ponciano Aguilar, the former superintendent of the…
Agrinierite: Physical and Chemical Properties
Agrinierite, formula- [K2(Ca,Sr)(UO2)3O3(OH)2].5H2O is a mineral often found in the oxidation zone of uranium deposits. It was named for the engineer of the Mineralogy Laboratory…
Agrellite: Identification and Occurrences
Agrellite (NaCa2Si4O10F) is a mineral found in Quebec, Canada. It is also known from few other areas. Agrellite displays pink fluorescence under both shortwave and…
Agardite
Agardite is a mineral group consisting of agardite-(Y), agardite-(Ce), agardite-(Nd) and agardite- They comprise a group of minerals that are hydrous hydrated arsenates of rare-earth…
Afwillite: Formation and Properties
Afwillite is a calcium hydroxide nesosilicate mineral with formula Ca3(SiO3OH)2·2H2O. It occurs as glassy, colorless to white prismatic monoclinic crystals. It is named after Alpheus…
Afghanite
Afghanite was named after Afghanistan, the country where it was first discovered. Afghanite formula- (Na,K)22Ca10[Si24Al24O96](SO4)6Cl6, is a hydrous sodium, calcium, potassium, sulfate, chloride, carbonate alumino-silicate…
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