Geographic Minerals
Hübnerite: Properties and Occurrences
Hübnerite or hubnerite is a mineral consisting of manganese tungsten oxide (chemical formula: MnWO4, it isn’t a tungstate). It is the Manganese rich end member…
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Geographic Minerals
Hubeite: Properties and Occurrences
The mineral hubeite, Ca2Mn2+Fe3+[Si4O12(OH)]·(H2O)2, is a sorosilicate of the Si4O13 group. It is a triclinic-pinacoidal mineral containing aluminum, calcium, hydrogen, iron, manganese, oxygen, and silicon.…
Geographic Minerals
Hsianghualite
Hsianghualite is a tectosilicate (framework silicate) of lithium, calcium, and beryllium, with fluorine, a member of the zeolite group. It is an isometric-tetartoidal white mineral…
Geographic Minerals
Howlite: Properties and Occurrence
Howlite, a calcium borosilicate hydroxide [Ca2B5SiO9(OH)5], is a borate mineral found in evaporite deposits. It is a mineral consisting of a white nodular or earthy…
Geographic Minerals
Hornblende: Properties and Occurrences
Hornblende is a complex inosilicate series of minerals (ferrohornblende – magnesiohornblende). The general formula can be given as (Ca, Na)2-3(Mg, Fe, Al)5(Al, Si)8O22(OH, F)2. It…
Geographic Minerals
Hopeite
Hopeite is a hydrated zinc phosphate with the formula: Zn3(PO4)2·4H2O. It is an orthorhombic-dipyramidal mineral containing hydrogen, oxygen, phosphorus, and zinc. It is a rare…
Geographic Minerals
Homilite: Properties and Occurrences
Homilite is a borosilicate mineral belonging to the gadolinite group of minerals with formula Ca2(Fe, Mg)B2Si2O10. It is a mineral consisting of a black or…
Geographic Minerals
Holmquistite: Properties and Occurrences
Holmquistite is a lithium magnesium aluminum inosilicate mineral with chemical formula: Li2(Mg, Fe2+)3Al2Si8O22(OH)2. It is a mineral consisting of an alkali and a silicate of…
Human Resource Management
Misconceptions Regarding Employee Rotation
Job rotation is the most popular method of job design in which employees working in one responsibility or job will be transferred to other jobs.…
Geographic Minerals
Hollandite: Properties and Occurrences
Hollandite (chemical formula: [Ba(Mn64+Mn23+)O16] is an oxide mineral. It is the barium-manganese (III) endmember of the coronadite group. It is a monoclinic-prismatic white mineral containing…
Geographic Minerals
Hoelite: Properties and Occurrences
Hoelite is a very rare organic mineral discovered in 1922 at Mt. Pyramide, Spitsbergen, Norway. Its chemical formula is C14H8O2 (9,10-anthraquinone). It is a monoclinic-prismatic…
Geographic Minerals
Hodgkinsonite: Properties and Occurrences
Hodgkinsonite is a rare zinc manganese silicate mineral Zn2MnSiO4(OH)2. It is a rare monoclinic zinc manganese silicate mineral, having a pink, red, or yellow-red color.…
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