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Uralborite

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Formula:
CaB2O2(OH)4
System:
Monoclinic
Colour:
Colourless
Hardness:
4
Name:
The name reflects its discovery locality and composition: a borate.
This page provides mineralogical data about Uralborite.


Classification of Uralborite

Approved
6.DA.35

6 : BORATES
D : Tetraborates
A : Neso-tetraborates
25.3.4.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.3.4

9 : Borates
3 : Borates of Ca and Sr

Physical Properties of Uralborite

Diaphaneity (Transparency):
Transparent
Colour:
Colourless
Hardness (Mohs):
4

Optical Data of Uralborite

Type:
Biaxial (+)
RI values:
nα = 1.604 nβ = 1.609 nγ = 1.615
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v

Chemical Properties of Uralborite

IMA Formula:
CaB2O2(OH)4
Idealised Formula:
Ca[B2O2(OH)4]
Elements listed in formula:

Crystallography of Uralborite

Crystal System:
Monoclinic
Cell Parameters:
a = 6.88 Å, b = 12.3 Å, c = 9.79 Å
β = 97.27°
Ratio:
a:b:c = 0.559 : 1 : 0.796
Unit Cell Volume:
V 821.81 ų (Calculated from Unit Cell)

Type Occurrence of Uralborite

Relationship of Uralborite to other Species

6.DA.10BoraxNa2B4O5(OH)4 · 8H2O
6.DA.15TincalconiteNa2B4O5(OH)4 · 3H2O
6.DA.20HungchaoiteMgB4O5(OH)4 · 7H2O
6.DA.25FedorovskiteCa2Mg2B4O7(OH)6
6.DA.25RoweiteCa2Mn22+B4O7(OH)6
6.DA.30HydrochlorboriteCa2B3O3(OH)4 · BO(OH)3Cl · 7H2O
6.DA.40BorcariteCa4MgB4O6(CO3)2(OH)6
6.DA.40NumanoiteCa4CuB4O6(CO3)2(OH)6
6.DA.60Fontarnauite(Na,K)2(Sr,Ca)(SO4)[B5O8(OH)] · 2H2O
9.3.1CalciboriteCaB2O4
9.3.2SibirskiteCaHBO3
9.3.3FabianiteCaB3O5(OH)
9.3.5VimsiteCaB2O2(OH)4
9.3.6OlshanskyiteCa2[B3O3(OH)6]OH · 3H2O
9.3.7FroloviteCa[B(OH)4]2
9.3.8KorzhinskiteCaB2O4 · 0.5H2O
9.3.9TyretskiteCa2B5O9(OH) · H2O
9.3.10NifontoviteCa3[BO(OH)2]6 · 2H2O
9.3.12InyoiteCaB3O3(OH)5 · 4H2O
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
9.3.14ColemaniteCaB3O4(OH)3 · H2O
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2O
9.3.16HexahydroboriteCa[B(OH)4]2 · 2H2O
9.3.17MeyerhofferiteCaB3O3(OH)5 · H2O
9.3.18PriceiteCa2B5O7(OH)5 · H2O
9.3.19GinoriteCa2B14O20(OH)6 · 5H2O
9.3.20ProbertiteNaCaB5O7(OH)4 · 3H2O
9.3.21UlexiteNaCaB5O6(OH)6 · 5H2O
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
9.3.23InderboriteCaMg[B3O3(OH)5]2 · 6H2O
9.3.24WardsmithiteCa5Mg(B4O7)6 · 30H2O
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4
9.3.26StrontioboriteSrB8O11(OH)4
9.3.27VeatchiteSr2[B5O8(OH)]2B(OH)3 · H2O
9.3.28Veatchite-ASr2B11O16(OH)5 · H2O
9.3.29 P-VeatchiteSr2B11O16(OH)5 · H2O
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2O
9.3.32StrontioginoriteSrCaB14O20(OH)6 · 5H2O

Other Names for Uralborite

Name in Other Languages:

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 Uralborite

Reference List:
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1961): 90: 673-681.

American Mineralogist (1962): 47: 1482.

Soviet Physics – Doklady: 14: 1044-1046.

European Journal of Mineralogy (1997): 9: 228.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Uralborite

mindat.org URL:
https://www.mindat.org/min-4097.html
Please feel free to link to this page.

Localities for Uralborite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Japan
 
  • Honshu Island
    • Chugoku Region
      • Okayama Prefecture
        • Takahashi City
          • Bicchu-cho (Bitchu-cho)
            • Fuka
Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71; Ando, T., Kanayama, A., Kobayashi, S., Miyawaki, R., Kishi, S., Tanabe, M., & Kusachi, I. (2015). Roweite from the Fuka mine, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 110(1), 29-34.
Russia (TL)
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Krasnotur'insk (Bogolovsk; Krasnoturjinsk; Krasnoturyinsk)
          • Turya river
            • Tur'insk
[AmMin 85:1322]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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