UM1990-73-SiO:KMnNaZn
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Formula:
(K,Na)2Zn3Mn1.5Si12O30
Colour:
colourless
Specific Gravity:
2.92 (Calculated)
Crystal System:
Hexagonal
Member of:
Said to be a possible K-analogue of shibkovite, which is not true as shibkovite is both K-dominant and also contains Ca.
Milarite-type structure.
Found within pegmatitic quartz boulders; forms fine-grained aggregates, up to 2 cm in diameter; associates: reedmergnerite, microcline, eudialyte.
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Milarite-type structure.
Found within pegmatitic quartz boulders; forms fine-grained aggregates, up to 2 cm in diameter; associates: reedmergnerite, microcline, eudialyte.
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Classification of UM1990-73-SiO:KMnNaZn
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM1990-73-SiO:KMnNaZn
Transparency:
Transparent
Colour:
colourless
Density:
2.92 g/cm3 (Calculated)
Chemical Properties of UM1990-73-SiO:KMnNaZn
Formula:
(K,Na)2Zn3Mn1.5Si12O30
Crystallography of UM1990-73-SiO:KMnNaZn
Crystal System:
Hexagonal
Cell Parameters:
a = 10.526(6) Å, c = 14.218(9) Å
Ratio:
a:c = 1 : 1.351
Unit Cell V:
1,364.26 ų (Calculated from Unit Cell)
Z:
2
Comment:
Space group P6cc or P6/mcc (the first one is more likely)
Relationship of UM1990-73-SiO:KMnNaZn to other Species
Member of:
Other Members of this group:
| Agakhanovite-(Y) | (YCa)◻2KBe3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Almarudite | K(◻,Na)2(Mn,Fe,Mg)2[(Be,Al)3Si12]O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm |
| Aluminosugilite | KNa2Al2Li3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Armenite | BaCa2Al6Si9O30 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnna |
| Berezanskite | KTi2Li3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Brannockite | KSn2(Li3Si12)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Chayesite | K(Mg,Fe2+)4Fe3+[Si12O30] | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Darapiosite | KNa2Mn2(Li2ZnSi12)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Dusmatovite | KK2Mn2(Zn2LiSi12)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Eifelite | KNa3Mg4Si12O30 | Hex. |
| Friedrichbeckeite | K(◻Na)Mg2(Be2Mg)Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Klöchite | (Fe2+Fe3+)◻2KZn3(Si12O30) | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Merrihueite | (K,Na)2(Fe2+,Mg)5Si12O30 | Hex. |
| Milarite | K2Ca4Al2Be4Si24O60 · H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Oftedalite | KSc2◻2Be3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Osumilite | (K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30 | Hex. |
| Osumilite-(Mg) | KMg2Al3(Al2Si10)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Poudretteite | KNa2B3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Roedderite | KNaMg2(Mg3Si12)O30 | Hex. 6 m2 : P62c |
| Shibkovite | K2Ca2(Zn3Si12)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Sogdianite | KZr2Li3Si12O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Sugilite | KNa2Fe3+2(Li3Si12)O30 | Hex. |
| Trattnerite | Fe3+2(Mg3Si12)O30 | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| Unnamed (Mn3+-dominant analog of Sugilite) | KNa2(Mn3+,Fe3+,Al)2Li3Si12O30 | |
| Yagiite | NaMg2(AlMg2Si12)O30 | Hex. 6/mmm (6/m 2/m 2/m) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for UM1990-73-SiO:KMnNaZn
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nadezhina, T.N., Sokolova, E.V., Belakovskii, D.L. (1990): The crystal structure of K(K0.58Na0.42)2Zn3Mn1.5[Si12O30] - A new natural representative of the milarite structural type. Doklady Akad. Nauk SSSR: 313(4), 865-868 (in Russian); in: Jambor, J.L., Vanko, D.A. (1991): New mineral Names. American Mineralogist: 77: 451-452
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016)
Internet Links for UM1990-73-SiO:KMnNaZn
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https://www.mindat.org/min-52026.html
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Localities for UM1990-73-SiO:KMnNaZn
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
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? - Indicates mineral may be doubtful at this locality.
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- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Tajikistan | |
| Nadezhina, T.N., Sokolova, E.V., Belakovskii, D.L. (1990): The crystal structure of K(K0.58Na0.42)2Zn3Mn1.5[Si12O30] - A new natural representative of the milarite structural type. Doklady Akad. Nauk SSSR: 313(4), 865-868 (in Russian); in: Jambor, J.L., Vanko, D.A. (1991): New mineral Names. American Mineralogist: 77: 451-452 |
