Bystromite Mineral Data

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

Environment:

In quartz veins in an oxidized antimony deposit.

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

La Fortuna and San Jose mines, El Antimonio, 27 km southwest of Agua Prieta, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for Anders Bystrom (1916-1956), Swedish crystal chemist, who made a structural analysis of the synthetic compound.

Name Pronunciation:

Bystromite + Pronunciation

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 Dipyramidal H-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
Ncalc = 1.9 - 1.95

Optical Data:

Uniaxial (?), b=1.86-1.91.

Calculated Properties of Bystromite

Electron Density:

Bulk Density (Electron Density)=5.08 gm/cc
note: Specific Gravity of Bystromite =5.70 gm/cc.

Fermion Index:

Fermion Index = 0.0068075007
Boson Index = 0.9931924993

Photoelectric:

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

Radioactivity:

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

Bystromite Classification

Dana Class:

44.02.01.01 (44)Antimonates

(44.02)A (X2 O6)

(44.02.01)Bystromite Group

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

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

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

Strunz Class:

04.DB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.D - Metal:Oxygen = 1:2 and similar

04.DB -With medium-sized cations; chains of edge-sharing octahedra

04.DB.10 Bystromite MgSb2O6 P 4₁/mnm 4/m 2/m 2/m

04.DB.10 Tapiolite-(Fe) (Fe,Mn)(Ta,Nb)2O6 P 4₁/mnm 4/m 2/m 2/m

04.DB.10 Ordonezite ZnSb2O6 P 4₁/mnm 4/m 2/m 2/m

04.DB.10 Tapiolite-(Mn) (Mn,Fe)(Ta,Nb)2O6 P 4₁/mnm 4/m 2/m 2/m

04.DB.10 Tapiolite* (Fe,Mn)(Ta,Nb)2O6 P 4₁/mnm 4/m 2/m 2/m

Other Bystromite Information

References:

NAME( AntBidBlaNic4) 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 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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

Bystromite

MgSb2O6
Dana No: 44.02.01.01 Strunz No: 04.DB.10
Locality:

Notes:

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