Bobjonesite
A valid IMA mineral species
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About Bobjonesite
Bob Jones
Formula:
(V4+O)(SO4) · 3H2O
Colour:
pale blue, blue-green
Lustre:
Vitreous
Hardness:
1
Specific Gravity:
2.28 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Robert (Bob) Jones (b. September 1, 1926), of Cave Creek, Arizona, USA for his contributions to the mineralogical community.
https://www.tandfonline.com/doi/full/10.1080/00357529.2024.2398404#d1e124
Life Member and Past President Mineralogical Society of Arizona.
https://www.tandfonline.com/doi/full/10.1080/00357529.2024.2398404#d1e124
Life Member and Past President Mineralogical Society of Arizona.
Crusts and efflorescences. Hydrates rapidly on exposure to air, stable only in the driest atmospheres.
Unique Identifiers
Mindat ID:
11455
Long-form identifier:
mindat:1:1:11455:8
IMA Classification of Bobjonesite
Approved
IMA Formula:
V4+OS6+O4·3H2O
Approval year:
2000
First published:
2003
Classification of Bobjonesite
7.DB.25
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Bjon | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Bobjonesite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Bobjonesite
Vitreous
Transparency:
Translucent
Colour:
Pale blue, blue-green
Streak:
Pale blue
Hardness:
1 on Mohs scale
Cleavage:
None Observed
Density:
2.28 g/cm3 (Calculated)
Optical Data of Bobjonesite
Type:
Biaxial (+)
RI values:
nα = 1.555 nβ = 1.561 nγ = 1.574
2V:
Measured: 72° , Calculated: 69°
Max. Birefringence:
δ = 0.019
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Low (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Pleochroism:
Non-pleochroic
Chemistry of Bobjonesite
Mindat Formula:
(V4+O)(SO4) · 3H2O
Element Weights:
Elements listed:
Crystallography of Bobjonesite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.394 Å, b = 7.4111 Å, c = 12.0597 Å
β = 106.55°
β = 106.55°
Ratio:
a:b:c = 0.998 : 1 : 1.627
Unit Cell V:
633.5 ų
Z:
4
Comment:
Space Group: P21/n.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005827 | Bobjonesite | Schindler M, Hawthorne F C, Huminicki D M C, Haynes P, Grice J D, Evans H T (2003) Bobjonesite, VO(SO4)(H2O)3, a new mineral species from Temple Mountain, Emery County, Utah, U.S.A. The Canadian Mineralogist 41 83-90 |  | 2003 | Temple Mountain, Emery County, Utah, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.795 Å | (100) |
| 3.498 Å | (90) |
| 3.881 Å | (48) |
| 5.408 Å | (37) |
| 4.571 Å | (20) |
| 6.962 Å | (11) |
| 6.255 Å | (11) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Bobjonesite
General Appearance of Type Material:
blue-green crusts and efflorescences; individual crystals are <<1 mm and intimately
intergrown
intergrown
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Canada, catalogue number
CMNMC 83759.
CMNMC 83759.
Geological Setting of Type Material:
Efflorescences in fractures in a fossil (Triassic) tree
Associated Minerals at Type Locality:
Synonyms of Bobjonesite
Other Language Names for Bobjonesite
Dutch:Bobjonesiet
German:Bobjonesit
Russian:Бобджонесит
Simplified Chinese:单斜钒矾
Spanish:Bobjonesita
Traditional Chinese:單斜釩礬
Common Associates
Associations Based on Photo Data:
| 3 photos of Bobjonesite associated with Orthominasragrite | (V4+O)(SO4) · 5H2O |
| 3 photos of Bobjonesite associated with Oldsite-(K) | K2Fe2+[(UO2)(SO4)2]2(H2O)8 |
| 3 photos of Bobjonesite associated with Pyrite | FeS2 |
| 3 photos of Bobjonesite associated with 'Asphaltite' | |
| 2 photos of Bobjonesite associated with 'Petrified Wood' | |
| 2 photos of Bobjonesite associated with Anorthominasragrite | (V4+O)(SO4) · 5H2O |
| 1 photo of Bobjonesite associated with Halotrichite | Fe2+Al2(SO4)4 · 22H2O |
| 1 photo of Bobjonesite associated with Stanleyite | (V4+O)(SO4) · 6H2O |
| 1 photo of Bobjonesite associated with Rozenite | FeSO4 · 4H2O |
| 1 photo of Bobjonesite associated with Native Sulphur | S8 |
Related Minerals - Strunz-mindat Grouping
| 7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O |
| 7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O |
| 7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O |
| 7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O |
| 7.DB.10 | Khademite | Al(SO4)F · 5H2O |
| 7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O |
| 7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O |
| 7.DB.27 | Karpovite | Tl2VO(SO4)2(H2O) |
| 7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O |
| 7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O |
| 7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O |
| 7.DB.35 | Calciocopiapite | CaFe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
| 7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O |
| 7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Bobjonesite
mindat.org URL:
https://www.mindat.org/min-11455.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Bobjonesite
Reference List:
Théobald, F.; Galy, J. (1973) Structure cristalline de VOSO4.3H2O. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 29 (12). 2732-2736 doi:10.1107/s0567740873007466
Schindler, M., Hawthorne, F. C., Huminicki, D. M.C., Haynes, P., Grice, J. D., Evans, H. T. (2003) Bobjonesite, V4+O(SO4)(H2O)3, a new mineral species from Temple Mountain, Emery County, Utah, U.S.A. The Canadian Mineralogist, 41 (1) 83-90 doi:10.2113/gscanmin.41.1.83
Localities for Bobjonesite
Showing 5 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Russia | |
| Siidra et al. (2014) |
USA | |
| collected by Eckhard D. Stuart +1 other reference |
| Schindler et al. (2003) |
| Collected by and in the collection of ... | |
| Patrick Haynes |
Quick NavTopAbout BobjonesiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPronunciation Physical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
North Mesa Mine Group, Temple Mountain Mining District, Emery County, Utah, USA