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Bobjonesite Mineral Data
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General Bobjonesite Information
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 Chemical Formula: |
VO(SO4)(H2O)3 |
| Composition: |
Molecular Weight = 217.05 gm |
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Vanadium 23.47 % V 41.90 % V2O5 |
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Hydrogen 2.79 % H 24.90 % H2O |
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Sulfur 14.77 % S 36.89 % SO3 |
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Oxygen 58.97 % O |
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______ ______ |
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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 |
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Bobjonesite Image |
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Images:
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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 |
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Bobjonesite Crystallography
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| 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 - Prismatic H-M Symbol (2/m) Space Group: P 21/m |
| X Ray Diffraction: |
By Intensity(I/Io): 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), |
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Physical Properties of Bobjonesite
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| Cleavage: |
None |
| Color: |
Pale blue, Bright blue. |
| Diaphaneity: |
Transparent |
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. |
| Habit: |
Water Soluble - Water soluble mineral. |
| Hardness: |
1 - Talc |
| Luster: |
Vitreous (Glassy) |
| Streak: |
pale blue |
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Optical Properties of Bobjonesite
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| Gladstone-Dale: |
CI calc= 0.155 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2471,KC= 0.2924
Ncalc = 1.67 |
| Optical Data: |
Biaxial (+), a=1.555, b=1.561, g=1.574, bire=0.0190 |
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Calculated Properties of Bobjonesite
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| Electron Density: |
Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Bobjonesite =2.28 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0019819992
Boson Index = 0.9980180008 |
| Photoelectric: |
PEBobjonesite = 5.27 barns/electron
U=PEBobjonesite x rElectron Density= 12.06 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bobjonesite is Not Radioactive |
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Bobjonesite Classification
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| Dana Class: |
29.06.12.02 (29)Hydrated Acid and Sulfates |
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(29.06)where A XO4 � x(H2O) |
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(29.06.12)Minasragrite Group (Monclinic and Triclinic) |
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29.06.12.01 Minasragrite VO(SO4)•5(H2O) P 21/a 2/m |
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29.06.12.02 Bobjonesite! VO(SO4)(H2O)3 P 21/m 2/m |
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29.06.12.03 Anorthominasragrite! VO(SO4)(H2O)5 P1 1 |
| Strunz Class: |
07.DB.25 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DB -With only medium-sized cations; insular octahedra and finite groups |
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07.DB.25 Bobjonesite! VO(SO4)(H2O)3 P 21/m 2/m |
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Other Bobjonesite Information
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| 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 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Bobjonesite Specimen Label here :
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Bobjonesite
VO(SO4)(H2O)3
Dana No: 29.06.12.02 Strunz No: 07.DB.25
Locality:
Notes:
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