Dollaseite-(Ce): Properties and Occurrence
Dollaseite-(Ce) is an epidote found in metamorphosed limes times and is very rare. It is a sorosilicate end-member epidote mineral and was discovered by Gajer…
Geographic Minerals
Dmitryivanovite
Dmitryivanovite is a natural mineral composed of calcium, aluminum, and oxygen, with the molecular formula CaAl2O4. It was reported in 2009 in a calcium-aluminum-rich inclusion…
Djurleite: Properties and Occurrence
Djurleite is a copper sulfide mineral of secondary origin with formula Cu31S16 that crystallizes with monoclinic-prismatic symmetry. It is typically massive in form but does…
Djerfisherite
Djerfisherite is an alkali copper–iron sulfide mineral and a member of the djerfisherite group. It is an isometric-hexoctahedral mineral containing chlorine, copper, iron, nickel, potassium,…
Dioptase: Properties and Occurrences
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its formula is CuSiO3·H2O [also reported as CuSiO(OH)2]. It is…
Diopside: Properties and Occurrences
Diopside is the mineral derives its name from the Greek words dis and opse, which mean twice and face, in reference to the two ways…
Dimorphite: Properties and Occurrences
Dimorphite, chemical name tetraarsenic trisulfide (As4S3), is a very rare orange-yellow arsenic sulfide mineral. It is an orthorhombic-dipyramidal orange mineral containing arsenic and sulfur. In…
Digenite: Properties and Occurrences
Digenite is a copper sulfide mineral with formula: Cu9S5. It is an important ore of copper, although it is not very well known even by…
Dickite: Properties and Occurrences
Dickite is a phyllosilicate clay mineral named after the metallurgical chemist Allan Brugh Dick, who first described it. It is a phyllosilicate clay mineral chemically…
Diaspore: Properties and Occurrence
Diaspore also known as diasporite, empholite, kayserite, or tanatarite, is an aluminum oxide hydroxide mineral, α-AlO(OH), crystallizing in the orthorhombic system and isomorphous with goethite.…
Diadochite: Properties and Occurrences
Diadochite is a phospho-sulfate mineral. It is a phosphosulfate mineral with a greenish-yellow to brown color. It is a secondary mineral formed by the weathering…
Diaboleite: Properties and Occurrences
Diaboleite is a blue-colored mineral, formula Pb2CuCl2(OH)4. It was first discovered in 1923 from the Higher Pitts, Mendip Hills, Somersetshire, England. The mineral has since…
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