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Archive for February, 2010

Afghanite

Saturday, February 27th, 2010

The chemical formula of mineral Afghanite is indicated by (Na, Ca, K)8(Si, Al)12O24(SO4, Cl, CO3)3-(H2O). Afghanite is actually generally associated with the sodalite-group minerals. It is found in its type of locality at Sar-e-Sang luzurite deposit in Afghanistan. It was named after its type of locality. Afghanite is known to crystallize in the hexagonal system […]

Aerinite

Saturday, February 27th, 2010

The chemical formula of mineral Aerinite is (Ca, Na)6FeAl(Fe+, Mg)6[Si12O36(OH)12H][(H2O)12(CO3)]. Aerinite is actually an alteration product in basalts and andesites as well as in hydrothermal zeolite deposits. It is usually found in its type of locality at Aragon, Caserras, Spain and St. Pandelon, Landes, Spain. Aerinite was named from the Greek word root aer, alluding […]

Aenigmatite

Saturday, February 27th, 2010

The chemical formula (Na, Ca)4(Fe++, Ti, Mg)12Si12O40. A primary constituent in sodium-rich alkali volcanic, pegmatites, and other silica-poor igneous rocks. Aenigmatite notably occur at localities including Naujakasik, near the Tunugdliarfik Fjord, and on the Kangerdluarssuk Plateau, in the Ilimaussaq intrusion; from Narssarssuk; and elsewhere. The name of the mineral Aenigmatite was derived from the Greek […]

Abswurmbachite

Sunday, February 14th, 2010

The chemical formula of mineral Abswurmbachite is indicated by Cu++Mn+++6SiO12. Abswurmbachite is most commonly found in very low-grade, high pressure metamorphic Mn, Al-rich sediments. Abswurmbachite is most commonly found at its type of locality at Milli, Avia and Andros Island, Greece. Abswurmbachite is named after the German mineralogists, Irmgard Abs-Wurmbach. Abswurmbachite is known to crystallize […]

Abenakiite-(Ce)

Sunday, February 14th, 2010

The chemical formula of Abenakiite-(Ce) is indicated by Na26REE6(SiO3)6(PO4)6(CO3)6(SO2)O. Abenakiite-(Ce) was named for the Abenaki Indian tribe, which inhabited the area around Mont Saint-Hilaire. Abenakiite-(Ce) is usually found as a single crystal that is embedded in sodalite in a xenoliths of sodalite syenite. Abenakiite-(Ce) is known to crystallize in the trigonal-hexagonal system of crystal formation. […]

Achavalite

Sunday, February 14th, 2010

The chemical formula of mineral Achavalite is indicated by the formula FeSe. It has been found the same as synthetic delta-Fe7S8 with niccolite structure type. It usually needs additional work. Achavalite is usually found at its type of locality at Cerro de Cacheuta, Mendoza, Argentina. This mineral is named after L. Achaval. Mineral Achaavalite is […]

Acetamide

Sunday, February 14th, 2010

The chemical formula of mineral Acetamide is indicated by CO(CH3)(NH2). Acetamide is named after ACETic acid and the AMIDE for the ammonia in its composition. Acetamide is known to crystallize in the trigonal-ditrigonal system of crystal formation. Acetamide is most commonly found colorless or gray in color when view with the aid of polarizing microscope […]

Adelite

Sunday, February 14th, 2010

The chemical formula of mineral Adelite is indicated by CaMg(AsO4)(OH). Adelite is usually found in manganese deposits at Langban. Its type of locality is Sweden at Langban, Filistad, Varmland. Adelite derived its name from the Greek word for indistinct, for its occurrence as massive specimens. Adelite is known to crystallize in the orthorhombic system of […]

Acuminite

Sunday, February 14th, 2010

The chemical formula of mineral Acuminite is indicated by SrAlF4(OH).(H2O). It is usually found in the Ivigtut cryolite deposit at Southwestern Greenland, its type of locality. Acuminite was named from the Latin acuminis which means sharp point, for spearhead, the characteristic shape of the crystals. Acuminite is known to crystallize in the monoclinic-prismatic system of […]

Afwillite

Sunday, February 14th, 2010

The chemical formula of mineral Afwillite is indicated by Ca3(Si2O4)(OH)6. Afwillite is a known product of contact metamorphism of limestones. Afwillite is from the Dutoitspan diamond mine, Kimberly, and the Wessels mine, near Kuruman, Cape Province, South Africa. Afwillite was named for Alpheus Fuller Williams (1874-1953), General Manager, DeBeers Consolidated Mines, Kimberly, South Africa. Afwillite […]

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