Jeffersonite: Properties and Occurrences
Jeffersonite is a dark green pyroxene mineral, a manganese zinc enriched variety of augite [Ca(Mn, Zn, Fe)Si2O6], sometimes compared to aegirine. It is a mineral…
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Jurbanite: Properties and Occurrences
Jurbanite is a sulfate mineral with the chemical formula AlSO4(OH)·5H2O. It is a monoclinic mineral. Jurbanite was first described for an occurrence in the San…
Junitoite: Properties and Occurrences
Junitoite is a mineral with formula CaZn2Si2O7·H2O. It was discovered at the Christmas mine in Christmas, Arizona, and described in 1976. The mineral is named…
Julgoldite: Properties and Occurrences
Julgoldite is a member of the pumpellyite mineral series, a series of minerals characterized by the chemical bonding of silica tetrahedra with alkali and transition…
Jordanite: Properties and Occurrences
Jordanite is a sulfosalt mineral with chemical formula Pb14(As, Sb)6S23 in the monoclinic crystal system, named after the German scientist H. Jordan (1808–1887) who discovered…
Jonesite: Properties and Occurrences
Jonesite is a mineral with the chemical formula Ba4(K, Na)2[Ti4Al2Si10O36]*6H2O. It is a monoclinic-prismatic colorless mineral containing aluminum, barium, hydrogen, oxygen, potassium, silicon, sodium, and…
Jolliffeite: Properties and Occurrences
Jolliffeite is a rare selenide mineral with formula NiAsSe or (Ni, Co)AsSe. It is an isometric-diploidal tin white mineral containing arsenic, cobalt, nickel, and selenium.…
Johannite: Properties and Occuurrences
Johannite is a rare uranium sulfate mineral. It crystallizes in the triclinic crystal system with the chemical composition Cu[UO2(OH)SO4]2·8H2O. It is a mineral consisting of…
Jimthompsonite: Properties and Occurrences
Jimthompsonite is a magnesium iron silicate mineral with formula: (Mg, Fe2+)5Si6O16(OH)2. It is an inosilicate with a triple chain silicate backbone, jimthompsonite and a few…
Jerrygibbsite: Properties and Occurrences
Jerrygibbsite is a rare silicate mineral with chemical formula: (Mn, Zn)9(SiO4)4(OH)2. It is a rare violet-pink mineral, believed to be a member of the leucophoenicite…
Jeremejevite: Properties and Occurrences
Jeremejevite is a rare aluminum borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al6B5O15(F, OH)3. It is a hexagonal-dipyramidal mineral containing…
Jennite: Properties and Occurrences
Jennite is a calcium silicate hydrate mineral of the general chemical formula: Ca9Si6O18(OH)6·8H2O. It is a triclinic-pinacoidal white mineral containing calcium, hydrogen, oxygen, and silicon.…
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