Bystromite Mineral Data

Bystromite Mineral Data +

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General Bystromite Information

Chemical Formula:

MgSb2O6

Composition:

Molecular Weight = 363.80 gm

Magnesium 6.68 % Mg 11.08 % MgO

Antimony 66.93 % Sb 88.92 % Sb₂O₅

Oxygen 26.39 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

MgSb₂O₆

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

Link to MinDat.org Location Data.

Synonym:

Bystroemite

ICSD 40345

PDF 37-1470

Bystromite Image

Images:

Bystromite

Comments: Dark brown bystromite in quartz.
Location: La Fortuna Mine, El Antimonio, Aqua Prieta, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bystromite Crystallography

Axial Ratios:

a:c = 1:1.96794

Cell Dimensions:

a = 4.68, c = 9.21, Z = 2; V = 201.72 Den(Calc)= 5.99

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4₁/mnm

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

By Intensity(I/I_o): 3.32(1), 1.73(0.9), 2.57(0.9),

Physical Properties of Bystromite

Color:

Blue.

Density:

5.7

Hardness:

7 - Quartz

Optical Properties of Bystromite

Gladstone-Dale:

CI meas= 0.019 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1477,KPDmeas= 0.1553,KC= 0.1582

Optical Data:

Uniaxial (?), b=1.86-1.91.

Calculated Properties of Bystromite

Electron Density:

r_electron=5.08 gm/cc
note: r_Bystromite=5.70 gm/cc.

Fermion Index

Fermion Index = 0.0068
Boson Index = 0.9932

Photoelectric:

PE_Bystromite= 221.22 barns/electron
U=PE_Bystromite x r_electron=1,122.98 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bystromite is Not Radioactive

Bystromite Classification

Dana Class:

44.2.1.1 (44)Antimonates

(44.2)A (X2 O6)

(44.2.1)Dana Group

44.2.1.1 Bystromite MgSb2O6 P 4₁/mnm 4/m 2/m 2/m

44.2.1.2 Ordonezite ZnSb2O6 P 4₁/mnm 4/m 2/m 2/m

44.2.1.3 Tripuhyite FeSbO4 P 4₁/mnm 4/m 2/m 2/m

Strunz Class:

IV/D.04-40 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.04 - Tapiolite group

IV/D.04-10 Ferrotapiolite (Fe,Mn)(Ta,Nb)2O6 P 4₁/mnm 4/m 2/m 2/m

IV/D.04-20 Manganotapiolite (Mn,Fe)(Ta,Nb)2O6 P 4₁/mnm 4/m 2/m 2/m

IV/D.04-40 Bystromite MgSb2O6 P 4₁/mnm 4/m 2/m 2/m

IV/D.04-50 Tripuhyite FeSbO4 P 4₁/mnm 4/m 2/m 2/m

IV/D.04-60 Ordonezite ZnSb2O6 P 4₁/mnm 4/m 2/m 2/m

Other Bystromite Information

References:

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

See Also:

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

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

Bystromite

MgSb2O6
Dana No: 44.2.1.1 Strunz No: IV/D.04-40
Locality:

Notes: