The chemical formula of mineral Arrojadite-(BaFe) is indicated by (Ba,K,Pb)Na3(Ca,Sr)(Fe++,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2. This mineral is usually found in a phengitic quartzite. The species name sigimundite is replaced by the name arrojadite-(BaFe). Arrojadite-(BaFe) is usually found at its type of locality near Madesimo, Spluga Valley, Central Alps, Italy. This mineral was originally for Pietro Sigismund (1874-1962), renamed […]
The chemical formula of mineral Arrojadite is indicated by KNa4CaMn++4Fe++10Al(PO4)12(OH,F)2. This mineral is usually found occuring at a high temperature, approximately 800 degrees C, primary mineral in granite pegmatites. At present, this is the series name. This can be found at its type of locality in Brazil, from the Sierra Branca pegmatite, 13 km south […]
The chemical formula of mineral Arnhemite is indicated by (K,Na)2Mg2(P2O7)•5(H2O). This mineral is commonly found occuring as flakes that form aggregates making up the principal component of a thin layer of white, friable slag in the profile of cave-floor soil. Mineral Arnhemite is most commonly found at its type of locality at Arnhem Cave, Namibia. […]
The chemical formula of mineral Armstrongite is indicated by CaZrSi6O15•3(H2O). Armstrongite is not a lunar mineral. It is usually associated with alkalic rocks. It is most commonly found at its type of locality at Khan-Bogdin massif, Mongolia. This mineral was named for Neil Alden Armstrong, (1930-), American astronaut, first human being on the moon’s surface, […]
The chemical formula of mineral Armenite is indicated by BaCa2Al6Si9O30•2(H2O). Mineral Armenite is usually found as a Silicate mineral that can be found in Barium-rich hydrothermal veins or fissures. This mineral is most commonly found at its type of locality at Armen Mine, Kongsberg, Norway. This mineral was named for its type of locality. Armenite […]
The chemical formula of mineral Armbrusterite is indicated by K5Na6Mn+++Mn++14[Si9O22]4(OH)10•4H2O. This mineral is usually found as a modulated manganese phyllosilicate. Armbrusterite is usually found at its type of locality at Mt. Kukisvumchorr, Kola Peninsula, Russia. Armbrusterite was named for Thomas Armbruster (b. 1950; University of Berne) for his outstanding contribution to structural mineralogy and crystallography, […]
The chemical formula of mineral Armangite is indicated by Mn2+26As18O50(OH)4(CO3). This mineral is usually found on a museum specimen collected from a metamorphosed Fe-Mn deposit. It is most commonly found at its type of locality at Langban, Varmland, Sweden. Armangite was named for Arsenic and MANGanese in the composition. Armangite is known to crystallize in […]
The chemical formula of mineral Armalcolite is indicated by (Mg,Fe++)Ti2O5. This mineral can be found at Ti oxides associated with deep-seated intrusives. This is usually found at its type of locality at the Tranquillity Base, Moon. Smoky Butte, Garfield Co., MT. Armalcolitewas named after the three astronauts of Apollo 11: Neil A. ARMstrong, Edwin E. […]
The chemical formula of mineral Aristarainite is indicated by Na2MgB12O20•8(H2O). Aristarainite is usually found at Playa evaporite sequence. It is also most commonly found at its type of locality at Tincalayu borax deposit, Salar del Hombre Muerto, Salta Province, Argentina. The mineral was named for Lorenzo Francisco Aristarain (1926- ), Argentine mineralogist specializing in borate […]
The chemical formula of mineral Arhbarite is indicated by Cu2Mg(AsO4)(OH)3. Arhbarite is usually found on massive dolomite. This mineral is most commonly found at its type of locality at Arhbar mine, Bou-Azzer, Morocco. Arhbarite was named for the locality. Arhbarite is known to crystallize in the triclinic system of crystal formation. In optical mineralogy, this […]
