Sborgite Mineral Data

Sborgite Mineral Data +

General Sborgite Information

Chemical Formula:

NaB5O6(OH)4·3(H2O)

Composition:

Molecular Weight = 295.11 gm

Sodium 7.79 % Na 10.50 % Na₂O

Boron 18.32 % B 58.98 % B₂O₃

Hydrogen 3.42 % H 30.52 % H₂O

Oxygen 70.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaB₅O₆(OH)₄·3(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 2849

PDF 24-1056

Sborgite Image

Images:

Sborgite

Comments: Pale grayish-green massive sborgite.
Location: Furnace Creek borate area, Death Valley, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sborgite Crystallography

Axial Ratios:

a:b:c =0.6788:1:0.8311

Cell Dimensions:

a = 11.1, b = 16.35, c = 13.59, Z = 8; beta = 113.167° V = 2,267.50 Den(Calc)= 1.73

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.6(1), 3.3(0.77), 3.2(0.76),

Physical Properties of Sborgite

Color:

Colorless.

Density:

1.713

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Sborgite

Gladstone-Dale:

CI meas= -0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2651,KPDmeas= 0.2678,KC= 0.2505

Optical Data:

Biaxial (+), a=1.431, b=1.438, g=1.507, bire=0.0760, 2V(Calc)=38, 2V(Meas)=35.

Calculated Properties of Sborgite

Electron Density:

r_electron=1.76 gm/cc
note: r_Sborgite=1.73 gm/cc.

Fermion Index

Fermion Index = 0.03679
Boson Index = 0.96321

Photoelectric:

PE_Sborgite= 0.43 barns/electron
U=PE_Sborgite x r_electron= 0.75 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sborgite is Not Radioactive

Sborgite Classification

Dana Class:

26.5.1.1 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.5)Dana Type

(26.5.1)Dana Group

26.5.1.1 Sborgite NaB5O6(OH)4·3(H2O) C 2/c 2/m

Strunz Class:

V/H.15-30 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2-

V/H.15 - Ammonioborite - Sborgite series

V/H.15-10 Ammonioborite (NH4)2B10O16·5(H2O) C 2/c 2/m

V/H.15-20 Santite KB5O6(OH)4·2(H2O) Aba2 mm2

V/H.15-30 Sborgite NaB5O6(OH)4·3(H2O) C 2/c 2/m

Other Sborgite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Sborgite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Print or Cut-and-Paste your Sborgite Specimen Label here :

Sborgite

NaB5O6(OH)4·3(H2O)
Dana No: 26.5.1.1 Strunz No: V/H.15-30
Locality:

Notes: