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Fabianite

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About FabianiteHide

Formula:
CaB3O5OH
Colour:
Colourless
Hardness:
6
Specific Gravity:
2.77
Crystal System:
Monoclinic
Name:
For Hans-Joachim Fabian, geologist, Wintershall AG., Erdolwerke Niedersachsen.
This page provides mineralogical data about Fabianite.


Classification of FabianiteHide

Approved
6.FC.20

6 : BORATES
F : Hexaborates
C : Phyllo-hexaborates
25.3.3.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.3.3

9 : Borates
3 : Borates of Ca and Sr

Physical Properties of FabianiteHide

Colour:
Colourless
Hardness:
Density:
2.77(1) g/cm3 (Measured)    2.788 g/cm3 (Calculated)

Optical Data of FabianiteHide

Type:
Biaxial (-)
RI values:
nα = 1.609 nβ = 1.638 nγ = 1.650
2V:
Measured: 65°
Max Birefringence:
δ = 0.041
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v moderate

Chemical Properties of FabianiteHide

Formula:
CaB3O5OH
IMA Formula:
CaB3O5(OH)

Crystallography of FabianiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 6.59 Å, b = 10.44 Å, c = 6.36 Å
β = 113.38°
Ratio:
a:b:c = 0.631 : 1 : 0.609
Unit Cell V:
401.64 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.27Å(10)
2.O75Å(7)
2.026Å(Z)
3.97Å(4)
3.04Å(4)
2.926Å(4)
2.149Å(4)
2.020Å(4)
1.944Å(4)

Type Occurrence of FabianiteHide

General Appearance of Type Material:
Good crystals, 0.3-25 mm in size
Geological Setting of Type Material:
rocksalt drill core
Associated Minerals at Type Locality:

Other Language Names for FabianiteHide

German:Fabianit
Spanish:Fabianita

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.10StrontioboriteSrB8O11(OH)4Mon.
6.FC.15GinoriteCa2B14O20(OH)6 · 5H2OMon.
6.FC.15StrontioginoriteCaSrB14O20(OH)6 · 5H2OMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.3.1CalciboriteCa(B2O4)Orth.
9.3.2SibirskiteCa2(HB2O5)(OH)Mon.
9.3.4UralboriteCa2[B3O3(OH)5 · OB(OH)3]Mon.
9.3.5VimsiteCaB2O2(OH)4Mon.
9.3.6OlshanskyiteCa2[B3O3(OH)6](OH) · 3H2OTric.
9.3.7FroloviteCa[B(OH)4]2Tric.
9.3.8KorzhinskiteCa(B2O4) · H2OMon. 2/m : P2/m
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.
9.3.26StrontioboriteSrB8O11(OH)4Mon.
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

Fluorescence of FabianiteHide

brownish-yellow fluorescence

Other InformationHide

Notes:
nearly insoluble in water, soluble in HCl and HNO3
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 FabianiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kühn R, Roese K L, Gaertner H (1962) Fabianit CaB3O5(OH), ein neues mineral. Kali und Steinsalz 3, 285-290
Fleischer M (1963) New mineral names. American Mineralogist (1963): 48: 212.
Richard C. Erd, G. Donald Eberlein, and C. L. Christ (1969): Fabianite and its synthetic dimorph, CaB3O5(OH); new data. Can. Mineral. 10, 108-112.
Konnert J A, Clark J R, Christ C L (1970) Crystal structure of fabianite CaB3O5(OH), and comparison with the structure of its synthetic dimorph. Zeitschrift für Kristallographie: 132: 241-252.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for FabianiteHide

Localities for FabianiteHide

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.
Germany (TL)
 
  • Lower Saxony
    • Diepholz
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001, 23
 
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