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About MetaboriteHide

Colourless, brownish
Crystal System:
Named for being naturally occurring metaboric acid. The meta refers to a dehydrated state of boric acid.
Dimorph of clinometaborite.

Classification of MetaboriteHide


G : Heptaborates and other megaborates
D : Mega-tektoborates

5 : Miscellaneous

9 : Borates
1 : Borates of the alkalis and boric acid

Physical Properties of MetaboriteHide

Colourless, brownish

Optical Data of MetaboriteHide


Chemical Properties of MetaboriteHide


Crystallography of MetaboriteHide

Crystal System:
Cell Parameters:
a = 8.88 Å
Unit Cell V:
700.23 ų (Calculated from Unit Cell)

Type Occurrence of MetaboriteHide

Other Language Names for MetaboriteHide

Simplified Chinese:偏硼石

Related Minerals - Nickel-Strunz GroupingHide

6.GD.05PringleiteCa9B26O34(OH)24Cl4 · 13H2OTric.
6.GD.05RuitenbergiteCa9B26O34(OH)24Cl4 · 13H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.1.1SassoliteH3BO3Tric. 1 : P1
9.1.4BiringucciteNa2B5O8(OH) · H2OMon.
9.1.5NasiniteNa2[B5O8(OH)] · 2H2OOrth.
9.1.6KerniteNa2[B4O6(OH)2] · 3H2OMon. 2/m : P2/b
9.1.7EzcurriteNa4B10O17 · 7H2OTric. 1 : P1
9.1.8TincalconiteNa2(B4O7) · 5H2OTrig. 3 2 : R3 2
9.1.9BoraxNa2(B4O5)(OH)4 · 8H2OMon. 2/m : B2/b
9.1.11SborgiteNa[B5O6(OH)4] · 3H2OMon.
9.1.12AristarainiteNa2MgB12O20 · 8H2OMon. 2/m : P21/b
9.1.13SantiteK[B5O6(OH)4] · 2H2OOrth.
9.1.14Larderellite(NH4)B5O7(OH)2 · H2OMon.
9.1.15Ammonioborite(NH4)2[B5O6(OH)4]2 · H2OMon. 2/m : B2/b
9.1.16Rhodizite(K,Cs)Al4Be4(B,Be)12O28Iso. 4 3m : P4 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 MetaboriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zachariasen, W.H. (1963) The crystal structure of cubic metaboric acid. Acta Crystallographica: 16: 380-384.
Peters, C.R., Milberg, M.E. (1964) The refined structure of orthorhombic metaboric acid. Acta Crystallographica: 17: 229-234.
Lobanova, V.V., Avrova, N.P. (1964) The new mineral metaborite — natural metaboric acid. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 93(3): 329-334.
Fleischer, M., Mandarino, J.A., Strunz, H., Cech, F. (1965) New mineral names. American Mineralogist: 50: 261-268.
International Mineralogical Association (1967) Commission on new minerals and mineral names. Mineralogical Magazine: 36: 131-136.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Freyhardt, C.C., Wiebcke, M., Felsche, J. (2000) The monoclinic and cubic phases of metaboric acid (precise redeterminations). Acta Crystallographica: C56: 276-278.

Internet Links for MetaboriteHide

Localities for MetaboriteHide

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.
  • Tavastia Proper
    • Hattula
Al-Ani, Thair and Aittola, Timo (2013). Mineralogical analysis of heavy minerals from selected till samples of Häme Belt, Souiheern Finland. Geological Survey of Finland, archive report 167/2013
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Campostrini I. et al - Vulcano: ein aussergewohnlicher Fundpunkt von neuen und seltenen Mineralien - MineralienWelt 2010 - nr.3 - p.40-57
Kazakhstan (TL)
  • Aktobe Region
    • Shalkar
      • Aksai Valley
American Mineralogist (1965): 50: 261-262.; Handbook of Mineralogy Vol V p 6; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Irkutsk Oblast
    • Zheleznogorsk (Korshunikha)
Mazurov, M.P., Grishina, S.N., Istomin, V.E., and Titov, A.T. (2007): Geology of Ore Deposits 49(4), 271-284.; Mazurov et al (2007) Geology of Ore Deposits, 49, 271–284.
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