Nickeline – Properties and Occurrences
Nickeline or niccolite is a mineral consisting of nickel arsenide (NiAs) containing 43.9% nickel and 56.1% arsenic. It can be found in nickel-copper ores from…
Geographic Minerals
Elbaite: Properties and Occurrences
Elbaite is a sodium-lithium-aluminum borosilicate mineral of the tourmaline group, prized as a gemstone. It is sodium, lithium, aluminum boro-silicate, with the chemical composition Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4,…
Amblygonite: Properties and Occurrences
Amblygonite is a fluorophosphate mineral, (Li,Na)AlPO4(F,OH), composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. It is a phosphate mineral composed of lithium, sodium, and…
Nickel – a Geographical Element
Nickel is a naturally occurring metallic element with a silvery-white, shiny appearance. It is a chemical element with the symbol Ni and atomic number 28.…
Nichromite: Properties and Occurrences
Nichromite (Ni, Co, Fe)(Cr, Fe, Al)2O4 is a black cubic metallic mineral and a member of the spinel group. It is an isometric-hexoctahedral black mineral…
Neptunite – Properties and Occurrences
Neptunite is a potassium sodium lithium iron manganese titanium mineral. It is a silicate mineral with the formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24. It is a rare crystal,…
Népouite – a Rare Geographic Minerals
Népouite is a rare nickel silicate mineral that has the apple green color typical of such compounds. Népouite, lizardite and pecoraite are all members of…
Bluebellite – Properties and Occurrences
Bluebellite is a mineral discovered in 2013 in the Blue Bell Mine in the Mojave Desert, California at the same time as the discovery of…
Nepheline: Properties and Occurrences
Nepheline is an important feldspathoid mineral. It also called nephelite, is a rock-forming mineral in the feldspathoid group: a silica-undersaturated aluminosilicate, Na3KAl4Si4O16, that occurs in…
Nenadkevichite: Properties and Occurrences
Nenadkevichite is an orthorhombic hydrated silicate of sodium, calcium, niobium, and titanium, which occurs as pale yellow crystals. It is a rare silicate mineral containing…
Nelenite: Properties and Occurrences
Nelenite is a rare manganese iron phyllosilicate arsenate mineral found in Franklin Furnace, New Jersey. It is a trigonal-hexagonal scalenohedral brown mineral containing arsenic, hydrogen,…
Auricupride – a natural alloy
Auricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu3Au. It is named after its chemical composition, being a natural…
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