Eveite: Properties and Occurrences

Eveite: Properties and Occurrences

Eveite is a manganese arsenate mineral in the olivenite group. Its chemical formula is Mn2AsO4OH. It is an orthorhombic-dipyramidal apple-green mineral containing arsenic, hydrogen, manganese,…
Euxenite-(Y)

Euxenite-(Y)

Euxenite or euxenite-(Y) is a brownish black mineral with a metallic luster. It is a mineral that is sometimes called a “trash can mineral”. Because…
Zirsilite-(Ce)

Zirsilite-(Ce)

Zirsilite-(Ce) is a very rare mineral of the eudialyte group, with formula (Na,[])12(Ce, Na)3 Ca6 Mn3Zr3NbSi(Si9O27)2(Si3O9)2O(OH)3(CO3)•H2O. The original formula was extended to show the presence…
Voronkovite

Voronkovite

Voronkovite is a very rare mineral of the eudialyte group with the formula Na15(Na, Ca, Ce)3(Mn, Ca)3Fe3Zr3Si2Si24O72(OH, O)4Cl·H2O. It is a trigonal-pyramidal yellowish-brown mineral containing…
Taseqite: Properties and Occurrences

Taseqite: Properties and Occurrences

Taseqite is a rare mineral of the eudialyte group, with formula Na12Sr3Ca6Fe3Zr3NbSiO(Si9 O27)2(Si3O9)2(O, OH, H2O)3Cl2. It occurs in a cavity in a late-stage hydrothermal albitite…
Rastsveatevite

Rastsveatevite

Rastsveatevite is a rare mineral of the eudialyte group with the formula Na27K8Ca12Fe3Zr6Si4[Si3O9]4[Si9O27]4(O, OH, H2O)6Cl2. It is a trigonal-ditrigonal pyramidal pink mineral containing calcium, chlorine,…
Raslakite: Properties and Occurrences

Raslakite: Properties and Occurrences

Raslakite is a rare mineral of the eudialyte group with the formula Na15 Ca3Fe3(Na,Zr)3Zr3(Si,Nb)SiO(Si9O27)2(Si3O9)2(OH,H2O)3(Cl,OH). It is a trigonal-ditrigonal pyramidal brownish-red mineral containing calcium, chlorine, hydrogen,…
Oneillite: Properties and Occurrences

Oneillite: Properties and Occurrences

Oneillite is a rare mineral of the eudialyte group with the formula Na15Ca3Mn3Fe23+Zr3NbSiO(Si3O9)2(Si9O27)2(O,OH,H2O)3(OH,Cl)2. It was named for John Johnston O’Neill, as a geologist with the…
Mogovidite: Properties and Occurrences

Mogovidite: Properties and Occurrences

Mogovidite is a very rare mineral of the eudialyte group, with formula Na9(Ca,Na)6Ca6(Fe3+,Fe2+)2 Zr3[]Si(Si9O27)2(Si3O9)2(CO3)(OH, H2O)4. It occurs in a nepheline-pectolite vein within ijolite. The formula given…
Manganoeudialyte

Manganoeudialyte

Manganoeudialyte is an moderately rare mineral of the eudialyte group, with formula Na14Ca6Mn3Zr3Si2[Si24O72(OH)2]Cl2·4H2O. The formula given is one of the forms that can be given,…
Manganokhomyakovite

Manganokhomyakovite

Manganokhomyakovite is a very rare mineral of the eudialyte group, with formula Na12Sr3Ca6Mn3Zr3WSi(Si9O27)2(Si3O9)2O(O, OH, H2O)3(OH, Cl)2. It is a trigonal-ditrigonal pyramidal mineral containing calcium, chlorine,…
Labyrinthite: Properties and Occurrences

Labyrinthite: Properties and Occurrences

Labyrinthite is a very rare mineral of the eudialyte group. When compared to other species in the group, its structure is extremely complex – with…
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