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Behierite

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Jean Béhier
Formula:
(Ta5+,Nb5+)(BO4)
System:
Tetragonal
Colour:
Greyish pink
Lustre:
Adamantine
Hardness:
7 - 7½
Name:
After Jean Behier (1903-1965), French mineralogist, Service Géologique, Madagascar, who found the mineral in 1959.
The tantalum analogue of Schiavinatoite.

Classification of Behierite

Approved
6.AC.15

6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
24.1.2.1

24 : ANHYDROUS BORATES
1 : A2XO4
9.6.6

9 : Borates
6 : Borates of Ti, Sn and Ta
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Type Occurrence of Behierite

General Appearance of Type Material:
4 grayish-pink pseudo-octahedral crystals, 0.5 to 7.0 mm in size.
Year of Discovery:
1960
Geological Setting of Type Material:
A complex LCT granite pegmatite hosted in a marble

Physical Properties of Behierite

Adamantine
Colour:
Greyish pink
Streak:
White
Hardness (Mohs):
7 - 7½
Hardness Data:
Measured
Cleavage:
Distinct/Good
{110} and {010}
Fracture:
Sub-Conchoidal
Density:
7.86(5) g/cm3 (Measured)    7.91 g/cm3 (Calculated)

Crystallography of Behierite

Crystal System:
Tetragonal
Cell Parameters:
a = 6.21Å, c = 5.48Å
Ratio:
a:c = 1 : 0.882
Unit Cell Volume:
V 211.33 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Pseudo-octahedral crystals. Forms: {011}
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.10 (100)
3.10 (71)
2.327 (71)
2.478 (50)
1.600 (50)
1.93 (35)

Optical Data of Behierite

Type:
Uniaxial (+)

Chemical Properties of Behierite

Formula:
(Ta5+,Nb5+)(BO4)
Essential elements:
All elements listed in formula:

Relationship of Behierite to other Species

6.AC.05SinhaliteMgAl(BO4)
6.AC.10PseudosinhaliteMg2Al3(BO3)2(OH)O3
6.AC.15Schiavinatoite(Nb,Ta)(BO4)
6.AC.20FroloviteCa[B(OH)4]2
6.AC.25HexahydroboriteCa[B(OH)4]2 · 6H2O
6.AC.30HenmiliteCa2Cu[B(OH)4]2(OH)4
6.AC.35BandyliteCu[B(OH)4]Cl
6.AC.40TeepleiteNa2[B(OH)4]Cl
6.AC.45Moydite-(Y)Y[B(OH)4](CO3)
6.AC.50CarboboriteCa2Mg[B(OH)4]2(CO3)2 · 4H2O
6.AC.55SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
6.AC.60LüneburgiteMg3[B2(OH)6](PO4)2 · 6H2O
6.AC.65SeamaniteMn32+[B(OH)4](PO4)(OH)2
6.AC.70CahniteCa2[B(OH)4](AsO4)
9.6.1Warwickite(Mg,Fe2+)3Ti(BO3)2O2
9.6.2Azoproite(Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2
9.6.3NordenskiöldineCaSn4+[BO3]2
9.6.4Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2
9.6.5Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2

Other Names for Behierite

Name in Other Languages:
German:Behierit
Spanish:Behierita

Other Information

Other Information:
Insoluble in hot or cold acids.
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 Behierite

Reference List:
Behier, J. (1960): Travaux mineralogiques. Rep.Malgache, Rapport Annuel Service Géologique, Tananarive, 186-187.

American Mineralogist. 46: 767.

Mrose & Rose (1961): Behierite, (Ta,Nb)BO4, a new mineral from Manjaka, Madagascar. Geological Society of America, Abstracts 1961, Ann. Meetings, 111A.

Fleischer, M. (1962): New Mineral Names. American Mineralogist. 47, 414. [abstract]

Behier, J. (1962): Travaux mineralogiques. Rep. Malgache, Rapport Annuel Service Géologique, Tananarive, 257 pp.

Ranorosoa, N.(1986): Etude minéralogique et microtèrmomiques des pegmatites du champ de la Sahatany. Thèse de Doctorat de l`Université Paul Sabatier, Toulouse. 232 pp.

Pezzotta, F.(2001): Schiavinatoit und Behierit aus Madagaskar. Lapis, 10/2001, 47-48.

Internet Links for Behierite

Localities for Behierite

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.
Madagascar
 
  • Antananarivo Province
    • Vakinankaratra Region
      • Betafo District
        • Andrembesoa Commune
          • FKT Antsentsindrano
Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
          • Tetezantsio-Andoabatokely Pegmatite Field
Pezzotta, Federico (2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Bergverksmuseet Skrift 35,97-98
Pezzotta, Federico (2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Bergverksmuseet Skrift 35,97-98
Pezzotta, F.(2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Norsk Bergverksmuseum Skrift. 35,97-98
      • Sahatany Pegmatite Field (Mt Ibity area)
        • Manandona Valley
Falster, A.U. and Simmons, W.B.(2002): A second world location for behierite in Florence county, Wisconsin. Rocks & Minerals may-june 2002
        • Sahatany Valley
Larsen, K. E. (2003): Mineralene i Sahatany pegmatittfelt, Madagaskar. Norsk Bergverksmuseums Skrift. 25, 5-18; Pezzotta, F.(2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Norsk Bergverksmuseum Skrift. 35,97-98
Mrose, M.E. & Rose jr, J. (1961): Behierite, (Ta, Nb)BO4, a new mineral from Manjaka, Madagascar. Geol.Soc.Am, Abstracts 1961 Ann. Meetings, p 111A
USA
 
  • Wisconsin
    • Florence Co.
      • Fern
Rocks & Min. (2002) 77:170
Mineral and/or Locality  
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