Bobjonesite Mineral Data

Bobjonesite Mineral Data

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General Bobjonesite Information

Chemical Formula:

VO(SO4)(H2O)3

Composition:

Molecular Weight = 217.05 gm

Vanadium 23.47 % V 41.90 % V₂O₅

Hydrogen 2.79 % H 24.90 % H₂O

Sulfur 14.77 % S 36.89 % SO₃

Oxygen 58.97 % O

______ ______

100.00 % 103.69 % = TOTAL OXIDE

Empirical Formula:

V⁵⁺O(SO₄)(H₂O)₃

Environment:

Silicified log in the Triassic Chinle Formation (Shinarump Conglomerate Member). Unstable in all but the driest atmosphere.

IMA Status:

Approved IMA 2001 (Dana # Added)

Locality:

Temple Mountain, Emery County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Bob Jones (1926-), of Cave Creek, Arizona, USA.

Synonym:

IMA2000-045

Bobjonesite Image

Images:

Bobjonesite

Comments: The silicified log and its coalified margin that hosts bobjonesite and other sulfate minerals. (CanMin, 41:85).
Location: Temple Mountain, Emery County, Utah, USA. Scale: Bob Jones is shown for scale.
© Canadian Mineralogist

Bobjonesite Crystallography

Axial Ratios:

a:b:c =0.9976:1:1.6272

Cell Dimensions:

a = 7.394, b = 7.4111, c = 12.0597, Z = 4; beta = 106.55° V = 633.47 Den(Calc)= 2.28

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 5.795(1)(002), 3.498(0.9)(112), 3.881(0.48)(103),5.408(0.37)(101), 4.571(0.2)(012), 6.255(0.11)(011), 6.962(0.11)(101), 3.423(0.1)(013),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
A - Atoms On/Off
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Help on Above

Schindler M , Hawthorne F C , Huminicki D M C , Haynes P , Grice J D , Evans H T , The Canadian Mineralogist , 41 (2003) p.83-90, Bobjonesite, VO(SO4)(H2O)3, a new mineral species from Temple Mountain,, Emery County, Utah, U.S.A., Locality: Temple Mountain, Emery County, Utah, USA

Physical Properties of Bobjonesite

Cleavage:

None

Color:

Pale blue, Bright blue.

Diaphaniety:

Transparent

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Water Soluble - Water soluble mineral.

Hardness:

1 - Talc

Luster:

Vitreous (Glassy)

Streak:

pale blue

Optical Properties of Bobjonesite

Gladstone-Dale:

CI calc= 0.155 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2471,KC= 0.2924

Optical Data:

Biaxial (+), a=1.555, b=1.561, g=1.574, bire=0.0190

Calculated Properties of Bobjonesite

Electron Density:

r_electron=2.29 gm/cc
note: r_Bobjonesite=2.28 gm/cc.

Fermion Index

Fermion Index = 0.00198
Boson Index = 0.99802

Photoelectric:

PE_Bobjonesite= 5.27 barns/electron
U=PE_Bobjonesite x r_electron= 12.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bobjonesite is Not Radioactive

Bobjonesite Classification

Dana Class:

29.6.12.2 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.12)Minasragrite Group (Monclinic and Triclinic)

29.6.12.1 Minasragrite VO(SO4)·5(H2O) P 2₁/a 2/m

29.6.12.2 Bobjonesite ! VO(SO4)(H2O)3 P 2₁/m 2/m

29.6.12.3 Anorthominasragrite! VO(SO4)(H2O)5 P1 1

Strunz Class:

VI/D.05-03 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.05 - Minasragrite - Stanleyite series

VI/D.05-03 Bobjonesite VO(SO4)(H2O)3 P 2₁/m 2/m

VI/D.05-05 Orthominasragrite! VO(SO4)·5(H2O) P mn2₁ mm2

VI/D.05-06 Anorthominasragrite! VO(SO4)(H2O)5 P1 1

VI/D.05-10 Minasragrite VO(SO4)·5(H2O) P 2₁/a 2/m

VI/D.05-20 Stanleyite (VO)SO4·6(H2O) Unk Ortho

Other Bobjonesite Information

References:

NAME( CanMin, v 41, p 83) PHYS. PROP.(CanMin, v 41, p 83) OPTIC PROP.(CanMin, v 41, p 83)

See Also:

Links to other databases for Bobjonesite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Bobjonesite

VO(SO4)(H2O)3
Dana No: 29.6.12.2 Strunz No: VI/D.05-03
Locality:

Notes: