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Strontioborite

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Formula:
SrB8O11(OH)4
Colour:
Colourless
Crystal System:
Monoclinic
Name:
The name reflects its composition : a strontium borate.
Originally reported from Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan.


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Classification of StrontioboriteHide

Discredited
6.FC.10

6 : BORATES
F : Hexaborates
C : Phyllo-hexaborates
25.6.3.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
6 : Hexaborates
9.3.26

9 : Borates
3 : Borates of Ca and Sr

Pronounciation of StrontioboriteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of StrontioboriteHide

Transparency:
Transparent
Colour:
Colourless
Tenacity:
Very brittle

Optical Data of StrontioboriteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.470 nβ = 1.510 nγ = 1.579
2V:
Measured: 85° , Calculated: 78°
Max Birefringence:
δ = 0.109
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
relatively weak

Chemical Properties of StrontioboriteHide

Formula:
SrB8O11(OH)4

Crystallography of StrontioboriteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 9.83 Å, b = 8.22 Å, c = 7.55 Å
β = 107.77°
Ratio:
a:b:c = 1.196 : 1 : 0.918
Unit Cell V:
580.95 ų (Calculated from Unit Cell)

Other Language Names for StrontioboriteHide

Related Minerals - Nickel-Strunz GroupingHide

6.FC.05TunelliteSrB6O9(OH)2 · 3H2OMon. 2/m : P21/b
6.FC.05NobleiteCaB6O9(OH)2 · 3H2OMon. 2/m
6.FC.15GinoriteCa2B14O20(OH)6 · 5H2OMon.
6.FC.15StrontioginoriteCaSrB14O20(OH)6 · 5H2OMon. 2/m : P21/b
6.FC.20FabianiteCaB3O5OHMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.3.1CalciboriteCa(B2O4)Orth.
9.3.2SibirskiteCa2(HB2O5)(OH)Mon.
9.3.3FabianiteCaB3O5OHMon. 2/m : P21/b
9.3.4UralboriteCa2[B3O3(OH)5 · OB(OH)3]Mon.
9.3.5VimsiteCaB2O2(OH)4Mon.
9.3.6OlshanskyiteCa2[B3O3(OH)6](OH) · 3H2O
9.3.7FroloviteCa[B(OH)4]2Tric.
9.3.8KorzhinskiteCa(B2O4) · H2O
9.3.9TyretskiteCa2B5O9OH · H2OTric.
9.3.10NifontoviteCa3B6O6(OH)12(H2O)2Mon.
9.3.12InyoiteCa(H4B3O7)(OH) · 4H2OMon. 2/m
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2OMon.
9.3.14ColemaniteCa[B3O4(OH)3] · H2OMon. 2/m : P21/b
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2OTric.
9.3.16HexahydroboriteCa[B(OH)4]2 · 2H2O or CaB2O4 · 6H2OMon. 2/m : B2/b
9.3.17MeyerhofferiteCa2(H3B3O7)2 · 4H2OTric. 1 : P1
9.3.18PriceiteCa2B5O7(OH)5 · H2OMon. 2/m : P21/b
9.3.19GinoriteCa2B14O20(OH)6 · 5H2OMon.
9.3.20ProbertiteNaCaB5O7(OH)4 · 3H2OMon. 2/m
9.3.21UlexiteNaCa[B5O6(OH)6] · 5H2OTric. 1 : P1
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2OMon.
9.3.23InderboriteCaMg(H3B3O7)2 · 8H2OMon. 2/m
9.3.24WardsmithiteCa5Mg[B4O7]6 · 30H2OHex.
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4Tric.
9.3.27VeatchiteSr2B11O16(OH)5 · H2OMon. m : Bb
9.3.28Veatchite-ASr2B11O16(OH)5 · H2OTric.
9.3.29 P-VeatchiteSr2B11O16(OH)5 · H2O
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2OMon. 2/m : P21/b
9.3.32StrontioginoriteCaSrB14O20(OH)6 · 5H2OMon. 2/m : P21/b

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 StrontioboriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Doklady Akademii Nauk SSSR (1960): 135: 173.
American Mineralogist (1961): 46: 768.
American Mineralogist (1965): 50: 1508.
Soviet Physics – Crystallography: 20: 563-566.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for StrontioboriteHide

Localities for StrontioboriteHide

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.
Kazakhstan
 
  • Aktobe Province (Aqtöbe Oblysy; Aktubinskaya Oblast')
    • Aksai Valley
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
Mineral and/or Locality  
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