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Sulfoborite

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About SulfoboriteHide

Formula:
Mg3[B(OH)4]2(SO4)(OH,F)2
Colour:
Colourless, reddish; colourless in transmitted light
Hardness:
4 - 4½
Specific Gravity:
2.38 - 2.45
Crystal System:
Orthorhombic
Name:
In allusion to the composition, being both a sulphate (sulfate) and a borate.
Related to Cahnite.


Classification of SulfoboriteHide

Approved, 'Grandfathered' (first described prior to 1959)
6.AC.55

6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
27.1.5.1

27 : COMPOUND BORATES
1 : Miscellaneous
10.3.1

10 : Borates with other anions
3 : Borates with sulphate

Pronounciation of SulfoboriteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of SulfoboriteHide

Transparency:
Transparent
Colour:
Colourless, reddish; colourless in transmitted light
Hardness:
4 - 4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {110} good; on {001} fair.
Density:
2.38 - 2.45 g/cm3 (Measured)    

Optical Data of SulfoboriteHide

Type:
Biaxial (-)
RI values:
nα = 1.527 nβ = 1.536 nγ = 1.551
2V:
Measured: 79° , Calculated: 78°
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v weak

Chemical Properties of SulfoboriteHide

Formula:
Mg3[B(OH)4]2(SO4)(OH,F)2

Crystallography of SulfoboriteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Morphology:
Crystals prismatic [001] of differing habit.

Type Occurrence of SulfoboriteHide

Synonyms of SulfoboriteHide

Other Language Names for SulfoboriteHide

Related Minerals - Nickel-Strunz GroupingHide

6.AC.05SinhaliteMgAl(BO4)Orth. mmm (2/m 2/m 2/m) : Pnma
6.AC.10PseudosinhaliteMg2Al3(BO3)2(OH)O3Mon.
6.AC.15Béhierite(Ta5+,Nb5+)(BO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
6.AC.15Schiavinatoite(Nb,Ta)(BO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
6.AC.20FroloviteCa[B(OH)4]2Tric.
6.AC.25HexahydroboriteCa[B(OH)4]2 · 2H2O or CaB2O4 · 6H2OMon. 2/m : B2/b
6.AC.30HenmiliteCa2Cu[B(OH)4]2(OH)4Tric.
6.AC.35BandyliteCu[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
6.AC.40TeepleiteNa2[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
6.AC.45Moydite-(Y)Y[B(OH)4](CO3)Orth. mmm (2/m 2/m 2/m) : Pbca
6.AC.50CarboboriteCa2Mg[B(OH)4]2(CO3)2 · 4H2OMon.
6.AC.60LüneburgiteMg3[B2(OH)6](PO4)2 · 6H2OTric.
6.AC.65SeamaniteMn2+3[B(OH)4](PO4)(OH)2Orth. mmm (2/m 2/m 2/m)
6.AC.70CahniteCa2[B(OH)4](AsO4)Tet. 4 : P4

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

10.3.2HeidorniteNa2Ca3B5O8(SO4)2Cl(OH)2Mon.
10.3.3CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2OTrig. 3m : P3 1c

Other InformationHide

Notes:
Soluble in acids. Decomposed by water.
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 SulfoboriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bücking (1893) Akademie der Wissenschaften, Berlin (Sitzungsberichte der): 967.
Naupert and Wense (1893) Ber.: 26: 874 (as Sulfoborit).
Thaddéeff (1897) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 28: 264.
Bücking (1902) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 36: 156.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 387-388 (as Sulfoborite).
American Mineralogist (1983): 68: 255-261.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for SulfoboriteHide

Localities for SulfoboriteHide

ⓘ - 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.
Belarus
 
  • Minsk Province
    • Pripyat Depression
USGS MRDS database potash: https://mrdata.usgs.gov/potash/show-potash.php?rec_no=55
Germany
 
  • Lower Saxony
    • Brunswick
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 388.
  • Saxony-Anhalt
    • Stassfurt Potash deposit
      • Egeln
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 388; Wittern: "Mineralfundorte in Deutschland", 2001
Kazakhstan
 
  • Aktobe
    • Aksai Valley
ERCOSPAN (2011) Independent Geological Report on the Zhilianskoe and Chelkar Potash Deposits in Kazakhstan EGB 11-012
  • Atyrau
    • Atyrau (Gur'yev)
Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30; Pekov, I. V. & Abramov, D. V. (1993): Boron deposit of the Inder and its minerals. World of Stones, 1, 23-30.
Russia
 
  • Irkutskaya 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.
UK
 
  • England
    • East Yorkshire (East Riding of Yorkshire)
Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177
    • North Yorkshire
      • Redcar and Cleveland
        • Loftus
Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
      • Scarborough
Smith, F.W., Dearlove, J.P.L., Kemp, S.J., Bell, C.P., Milne, C.J. and Pottas, T.L. (2014) Potash – Recent exploration developments in North Yorkshire. Pp. 45-50 in Hunger, E., Brown, T. J. and Lucas, G. (Eds.) Proceedings of the 17th Extractive Industry Geology Conference, EIG Conferences Ltd. 202pp
Smith, F.W., Dearlove, J.P.L., Kemp, S.J., Bell, C.P., Milne, C.J. and Pottas, T.L. (2014) Potash – Recent exploration developments in North Yorkshire. Pp. 45-50 in Hunger, E., Brown, T. J. and Lucas, G. (Eds.) Proceedings of the 17th Extractive Industry Geology Conference, EIG Conferences Ltd. 202pp
Smith, F.W., Dearlove, J.P.L., Kemp, S.J., Bell, C.P., Milne, C.J. and Pottas, T.L. (2014) Potash – Recent exploration developments in North Yorkshire. Pp. 45-50 in Hunger, E., Brown, T. J. and Lucas, G. (Eds.) Proceedings of the 17th Extractive Industry Geology Conference, EIG Conferences Ltd. 202pp
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