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Archive for the 'Optical Mineralogy' Category

Denningite

Tuesday, January 31st, 2012

The chemical formula of mineral Denningite is indicated by (Mn,Zn)Te2O5. Mineral Denningite is also commonly found occurring at Hydrothermal Au-Te deposit. It can be also found from its type of locality at Moctezuma (Bambolla) mine, 12 km south of Moctezuma, Sonora, Mexico. Mineral Denningite was named for Reynolds McConnell Denning (1916-1967), Professor of Mineralogy, University […]

Denisovite

Tuesday, January 31st, 2012

The chemical formula of mineral Denisovite is indicated by (K,Na)Ca2Si3O8(F,OH). This mineral is commonly occurring in nepheline syenite in a differentiated alkalic massif. Denisovite can be also found from its type of locality at Mts. Eveslogchorr and Yukspor, Khibiny massif, Kola Peninsula, and in the Murun massif, southwest of Olekminsk, Yakutia, Russia. Denisovite was named […]

Demesmaekerite

Tuesday, January 31st, 2012

The chemical formula of mineral Demesmaekerite is indicated by Pb2Cu5(UO2)2(SeO3)6(OH)6•2(H2O). It is commonly found occurring from the lower part of the oxidation zone. Mineral Demesmaekerite is also found from its type of locality at Musonoi mine, Kolwezi, Shaba, Zaire. This mineral was named for Gaston Demesmaeker (1911-), Belgian mining geologist, who studied the Shikolobwe uranium […]

Demartinite

Tuesday, January 31st, 2012

The chemical formula of mineral Demartinite is indicated by K2[SiF6]. The first specimen of this mineral was collected in April 2006 from a fumarole at the crater rim. This mineral is polymorphous with hieratite. Demartinite is commonly found occurring from its type of locality at La Fossa crater, Vulcano, Eolian Islands, Italy. Demartinite was named […]

Delvauxite

Tuesday, January 31st, 2012

The chemical composition of mineral Delvauxite is indicated by the formula CaFe+++4(PO4,SO4)2(OH)8•4-6(H2O). This mineral is commonly found occurring in a gossan. It can be also found from its type of locality at Berneau, near Vise, Liège, Belgium. Delvauxite was named after J.S.P.J. Delvaux de Feuffe (1782-1863), Belgian chemist who first described and analyzed the mineral. […]

Deloryite

Tuesday, January 31st, 2012

The chemical formula of mineral Deloryite is indicated by Cu4(UO2)(MoO4)2(OH)6. This mineral is commonly found occurring in oxidized portion of a uranium deposit in sandstone. This mineral is also commonly found from its type of locality at Cap Garonne mine, near le Pradet, Var, France. Mineral Deloryite was named for Jean Claude Delory (1953- ), […]

Delrioite

Tuesday, January 31st, 2012

The chemical formula of mineral Delrioite is indicated by CaSrV2O6(OH)2•3(H2O). Delrioite is commonly found occurring as coatings on sandstone. This mineral is usually found from its type of locality at Jo Dandy mine, Montrose County, Colorado, USA. Delrioite was named for Andres M. del Rio (1764-1849), Mexican mineralogist, who discovered vanadium. Delrioite is known to […]

Deloneite-(Ce)

Monday, January 30th, 2012

The chemical formula of mineral Deloneite-(Ce) is indicated by NaCa2SrCe(PO4)3F. Deloneite-(Ce) is commonly found forming in Carbonitite igneous rocks. This mineral was first found from Mount Koashva, Khibina alkaline massif, Kola Peninsula, Russia. Deloneite-(Ce) was named for B. N. Delone (Delaunay) (1890-1980), Russian mathematical crystallographer. Deloneite-(Ce) is known to crystallize in the trigonal system of […]

Dellaventuraite

Monday, January 30th, 2012

The chemical composition of mineral Dellaventuraite is indicated by the formula NaNa2(Mg2,Mn+++,Li,Ti)Si8O22O2. Dellaventuraite commonly occurs with leakeite, kornite, albite, braunite, and bixbyite associated with cross-cutting epigenetic veins that have reacted with regionally metamorphosed rocks containing Mn-rich minerals. Dellaventuraite is a known member of the Amphibole group. This mineral is commonly found from its type of […]

Dellaite

Monday, January 30th, 2012

The chemical formula of mineral Dellaite is indicated by Ca6Si3O11(OH)2. Dellaite is commonly found occurring at late-stage veins cutting a metamorphic assemblage. It can be also found from its type of locality at Kilchoan, Ardnamurcan, Scotland. Dellaite was named for Della Martin Roy (1926-), Pennsylvania State University geochemist who first synthesized this phase. Dellaite is […]

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