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Bob Jones
V4+OSO4 · 3H2O
pale blue, blue-green
Named in 2003 by M. Schindler, Frank C. Hawthorne, D. M. C. Huminicki, Patrick Haynes, Joel D. Grice, and Howard T. Evans in honor of Robert (Bob) Jones [b. September 1, 1926), of Cave Creek, Arizona, USA for his contributions to the mineralogical community.
Crusts and efflorescences. Hydrates rapidly on exposure to air, stable only in the driest atmospheres.

Classification of Bobjonesite

Approval Year:

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

Physical Properties of Bobjonesite

pale blue, blue-green
pale blue
Hardness (Mohs):
None Observed
2.28 g/cm3 (Calculated)

Optical Data of Bobjonesite

Biaxial (+)
RI values:
nα = 1.555 nβ = 1.561 nγ = 1.574
Measured: 72° , Calculated: 69°
Max Birefringence:
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of Bobjonesite

IMA Formula:
V4+OSO4 · 3H2O
Elements listed in formula:

Crystallography of Bobjonesite

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.394 Å, b = 7.4111 Å, c = 12.0597 Å
β = 106.55°
a:b:c = 0.998 : 1 : 1.627
Unit Cell Volume:
V 633.5 ų

Type Occurrence of Bobjonesite

Relationship of Bobjonesite to other Species

7.DB.05AubertiteCu2+Al(SO4)2Cl · 14H2O
7.DB.05MagnesioaubertiteMgAl(SO4)2Cl · 14H2O
7.DB.05SvyazhiniteMgAl(SO4)2F · 14H2O
7.DB.10KhademiteAlSO4F · 5H2O
7.DB.10RostiteAlSO4(OH) · 5H2O
7.DB.15JurbaniteAlSO4(OH) · 5H2O
7.DB.20MinasragriteV4+O(SO4) · 5H2O
7.DB.20OrthominasragriteV4+O(SO4) · 5H2O
7.DB.20AnorthominasragriteV4+O(SO4) · 5H2O
7.DB.30AmarantiteFe23+O(SO4)2 · 7H2O
7.DB.30HohmanniteFe23+O(SO4)2 · 8H2O
7.DB.30MetahohmanniteFe23+O(SO4)2 · 4H2O
7.DB.35Aluminocopiapite(Al,Mg)Fe43+(SO4)6(OH,O)2 · 20H2O
7.DB.35CalciocopiapiteCaFe43+(SO4)6(OH)2 · 20H2O
7.DB.35CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
7.DB.35CuprocopiapiteCu2+Fe43+(SO4)6(OH)2 · 20H2O
7.DB.35FerricopiapiteFe3+0.67Fe43+(SO4)6(OH)2 · 20H2O
7.DB.35MagnesiocopiapiteMgFe43+(SO4)6(OH)2 · 20H2O
7.DB.35ZincocopiapiteZnFe43+(SO4)6(OH)2 · 20H2O

Other Names for Bobjonesite

Name in Other Languages:
Simplified Chinese:单斜钒矾
Traditional Chinese:單斜釩礬

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.

References for Bobjonesite

Reference List:
Schindler, M., F.C. Hawthorne, D.M.C. Huminicki, P. Haynes, J.D. Grice & H.T. Evans (2003): Bobjonesite, V4+O(SO4)(H2O)3, a new mineral species from Temple Mountain, Emery County, Utah, U.S.A.: Canadian Mineralogist: 41: 83-90.

Internet Links for Bobjonesite URL:
Please feel free to link to this page.

Localities for Bobjonesite

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Far-Eastern Region
    • Kamchatka Oblast'
      • Tolbachik volcano
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
Siidra, O. I., Vergasova, L. P., Kretser, Y. L., Polekhovsky, Y. S., Filatov, S. K., & Krivovichev, S. V. (2014). Unique thallium mineralization in the fumaroles of Tolbachik volcano, Kamchatka Peninsula, Russia. III. Evdokimovite, Tl4 (VO) 3 (SO4) 5 (H2O) 5. Mineralogical Magazine, 78(7), 1711-1724.
  • Colorado
    • La Plata Co.
      • La Plata District (California District)
collected by Eckhard D. Stuart; PXRD Dr. Anthony R. Kampf
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
        • Temple Mountain
M. Schindler et al. (2003) Can. Mineral. 41, 83-90
Patrick Haynes
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