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UM2000-64-SiO:BFeHKMg

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Formula:
(K,Na)Fe3+3(Mg2Fe3+4)Si6O18(BO3)3(OH)3O
A presently unnamed K-dominant member of the tourmaline group.

Found in zoned crystals at the type locality of povondraite.

Also found in ultra-high pressure rocks ("K-dravite") - compare maruyamaite which is the only approved K-dominant group member.

Grain sized: several tens of micrometers.


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Classification of UM2000-64-SiO:BFeHKMgHide

Notes:
Unnamed (probably valid)
Approval History:
Unnamed, and probably invalid.

Chemical Properties of UM2000-64-SiO:BFeHKMgHide

Formula:
(K,Na)Fe3+3(Mg2Fe3+4)Si6O18(BO3)3(OH)3O

Synonyms of UM2000-64-SiO:BFeHKMgHide

Relationship of UM2000-64-SiO:BFeHKMg to other SpeciesHide

Other Members of this group:
AdachiiteCaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH)Trig. 3m : R3m
BosiiteNaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Chromium-draviteNa(Mg3)Cr3+6(Si6O18)(BO3)3(OH)3(OH)Trig.
Chromo-alumino-povondraiteNa(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
DarrellhenryiteNa(LiAl2)Al6(BO3)3Si6O18(OH)3O Trig. 3m : R3m
DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
FeruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Fluor-buergeriteNa(Fe3+3)Al6(Si6O18)(BO3)3O3FTrig. 3m : R3m
Fluor-draviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-feruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3F
Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-schorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-tsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Fluor-uviteCaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3FTrig. 3m : R3m
Foitite(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OHTrig. 3m : R3m
LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
LucchesiiteCaFe2+3 Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Mon. m : Bm
Magnesio-foitite(□,Na)(Mg2Al)Al6(Si6O18)(BO3)3(OH)3(OH)Trig.
Magnesio-lucchesiiteCaMg3Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
MaruyamaiteK(MgAl2)(Al5Mg)(BO3)3(Si6O18)(OH)3OTrig. 3m : R3m
OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)Trig.
Oxy-chromium-draviteNa(Cr)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Oxy-draviteNa(MgAl2)MgAl5(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-foitite□(Fe2+Al2)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m (3 2/m) : R3m
Oxy-rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3O
Oxy-schorlNa(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OTrig. 3m : R3m
Oxy-uviteCaMg3Al6(Si6O18)(BO3)3(OH)3O
Oxy-vanadium-draviteNa(V)3(V4Mg2)Si6O18(BO3)3(OH)3OTrig. 3m : R3m
PovondraiteNaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3OTrig.
Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
SchorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
TsilaisiteNa(Mn2+)3Al6(Si6O18)(BO3)3(OH)3(OH)Trig. 3m : R3m
Unnamed (Pb-dominant Tourmaline)(Pb,Na)(Li,Al)3Al6(Si6O18)(BO3)3(OH)3(F,OH)
Uvite SeriesCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)Trig. 3m : R3m
Vanadio-oxy-chromium-draviteNa(V)3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O Trig. 3m : R3m
Vanadio-oxy-draviteNaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3OTrig. 3m

Other InformationHide

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 UM2000-64-SiO:BFeHKMgHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Žáček, V., Frýda, J., Petrov, A., Hyršl, J. (2000): Tourmalines of the povondraite-(oxy)dravite series from the caps rocks of meta-evaporite in Alto Chapare, Cochamba, Bolivia. Journal of the Czech Geological Society, 45, 3-12.
Henry, D., Novák, M., Hawthorne, F.C., Ertl, A., Dutrow, B.L., Uher, P., Pezzotta, F. (2011): Nomenclature of the tourmaline supergroup minerals. Am. Mineral., 96, 895-913.
Shimizu, R., Ogasawara, Y. (2013): Diversity of potassium-bearing tourmalines in diamondiferous Kokchetav UHP metamorphic rocks: A geochemical recorder from peak to retrograde metamorphic stages. Journal of Asian Earth Sciences: 63: 39-55.
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 (2012 Update). Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016) (Update: 2012-017)

Internet Links for UM2000-64-SiO:BFeHKMgHide

Localities for UM2000-64-SiO:BFeHKMgHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Bolivia
 
  • Cochabamba
    • Chapare Province
      • Alto Chapare mining district
        • Cristalmayu subdistrict
          • Cristalmayu
Žáček, V., Frýda, J., Petrov, A. and Hyršl, J. (2000): Tourmalines of the povondraite-(oxy)dravite series from the caps rocks of meta-evaporite in Alto Chapare, Cochamba, Bolivia. Journal of the Czech Geological Society, 45, 3-12.
Kazakhstan
 
  • Akmola Region
    • Zerendy
Shimizu, R. & Ogasawara, Y. (2013): Diversity of potassium-bearing tourmalines in diamondiferous Kokchetav UHP metamorphic rocks: A geochemical recorder from peak to retrograde metamorphic stages. Journal of Asian Earth Sciences, 63, 39-55.
 
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