Swedenborgite Mineral Data

General Swedenborgite Information

Chemical Formula:

NaBe4SbO7

Composition:

Molecular Weight = 292.78 gm

Sodium 7.85 % Na 10.58 % Na₂O

Beryllium 12.31 % Be 34.17 % BeO

Antimony 41.58 % Sb 55.24 % Sb₂O₅

Oxygen 38.25 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaBe₄SbO₇

Environment:

Skarn from a metamorphosed Fe–Mn orebody.

IMA Status:

Valid Species (Pre-IMA) 1924

Locality:

Langban, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Emanuel Swedenborg (1688-1772), Swedish philosopher and theologian.

Name Pronunciation:

Swedenborgite + Pronunciation

Synonym:

ICSD 27599

PDF 23-656

Swedenborgite Image

Images:

Swedenborgite

Comments: Water clear, prismatic crystal of swedenborgite on matrix. Under UV light it glows intense blue.
Location: Langban, Varmland, Sweden. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Swedenborgite Crystallography

Axial Ratios:

a:c = 1:1.62587

Cell Dimensions:

a = 5.442, c = 8.848, Z = 2; V = 226.93 Den(Calc)= 4.28

Crystal System:

Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 6₃mc

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

By Intensity(I/I_o): 4.2(1), 2.51(0.9), 2.72(0.9),

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Forms: ( 1 1 1) ( 1 1 0) ( 0 0 1)

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Crystal Structure:

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Pauling L , Klug H P , Winchell A N , American Mineralogist , 20 (1935) p.492-501, The crystal structure of swedenborgite, NaBe4SbO7

View Additional jPOWD Structure files for Swedenborgite
[1]

Physical Properties of Swedenborgite

Cleavage:

{0001} Distinct

Color:

Brownish yellow, Colorless, Honey yellow, Light yellow.

Density:

4.285

Diaphaneity:

Transparent

Fracture:

Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.

Hardness:

8 - Topaz

Luminescence:

Fluorescent, Short UV=sky blue, Long UV=deep red.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Swedenborgite

Dichroism (e):

colorless.

Dichroism (w):

colorless.

Gladstone-Dale:

CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1801,KPDmeas= 0.1799,KC= 0.1866
Ncalc = 1.8

Optical Data:

Uniaxial (-), e=1.77, w=1.772, bire=0.0020.

Calculated Properties of Swedenborgite

Electron Density:

Bulk Density (Electron Density)=3.92 gm/cc
note: Specific Gravity of Swedenborgite =4.28 gm/cc.

Fermion Index:

Fermion Index = 0.12
Boson Index = 0.88

Photoelectric:

PE_{Swedenborgite}= 133.86 barns/electron
U=PE_{Swedenborgite} x rElectron Density= 524.42 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Swedenborgite is Not Radioactive

Swedenborgite Classification

Dana Class:

44.03.01.01 (44)Antimonates

(44.03)with miscellaneous formulae

(44.03.01)Dana Group

44.03.01.01 Swedenborgite NaBe4SbO7 P 6₃mc 6mm

Strunz Class:

04.AC.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.A - Metal:Oxygen = 2.1 and 1:1

04.AC -M:O = 1:1 (and up to 1:1.25); with large cations (± smaller ones)

04.AC.05 Swedenborgite NaBe4SbO7 P 6₃mc 6mm

Other Swedenborgite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Swedenborgite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Swedenborgite here :
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Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Swedenborgite

NaBe4SbO7
Dana No: 44.03.01.01 Strunz No: 04.AC.05
Locality:

Notes: