Oppenheimerite: Properties and Occurrences
Oppenheimerite is a very rare uranium mineral with the formula Na2(UO2)(SO4)2•3H2O. It is a triclinic mineral that is a mixed hydrated sodium sulfate and urinate.…
Geographic Minerals
Oosterboschite: Properties and Occurrences
Oosterboschite is a rare selenide mineral with the formula (Pd,Cu)7Se5. It is an orthorhombic black mineral containing copper, palladium, and selenium. It occurs as composite…
A New Porous Material with the Potential to Produce Renewable Energy from Water
Hydrogen gas, which is created from water with the help of sunshine, is one potential renewable energy source. Researchers at Linköping University in Sweden have…
Omphacite: Properties and Occurrences
Omphacite is a silicate mineral in the clinopyroxene group with the formula: (Ca, Na)(Mg, Fe2+, Al)Si2O6 is a rare pyroxene group member. It is a…
Oldhamite: Properties and Occurrences
Oldhamite is a calcium magnesium sulfide mineral with the chemical formula (Ca,Mg)S. It is a mineral CaS that is found in meteorites and is composed…
Olivenite: Properties and Occurrences
Olivenite is a copper arsenate mineral with the chemical formula Cu2AsO4OH. It is a mineral that is olive green, dull brown, or yellowish in color…
Okenite: Properties and Occurrences
Okenite (CaSi2O5·2H2O) is a silicate mineral commonly found with zeolites. It is most commonly found within basalt geodes as small white “cotton ball” formations. It…
Olgite: Properties and Occurrences
Olgite is a rare blue-green colored phosphate mineral series that forms microscopic prismatic crystals that are trigonal in structure. It is a trigonal-hexagonal scalenohedral mineral…
Niobite – Properties and Occurrences
Niobite, also known as Columbite, [(Fe, Mn)Nb2O6], is a niobium ore that is black in color. It is a black mineral composed of niobium oxide…
Coltan – a Dull Black Metallic Ore
Coltan is a dull black metallic ore that contains the elements niobium and tantalum. It is a dull black ore composed of columbite and tantalite…
Nephrite: Properties and Occurrences
Nephrite is a calcium, magnesium, and iron-rich amphibole mineral similar to tremolite or actinolite (aggregates of which also make up one form of asbestos). It…
Nyerereite: Properties and Occurrences
Nyerereite is a mineral with the formula Na2Ca(CO3)2 that is extremely rare. It is a chemical composition in which the alkali element is clearly present,…
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