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This page kindly sponsored by Mineralogical Society of Arizona
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About BobjonesiteHide

Bob Jones
(V4+O)(SO4) · 3H2O
pale blue, blue-green
Specific Gravity:
2.28 (Calculated)
Crystal System:
Named in honor of Robert (Bob) Jones [b. September 1, 1926), of Cave Creek, Arizona, USA for his contributions to the mineralogical community.

Life Member and Past President Mineralogical Society of Arizona.
Crusts and efflorescences. Hydrates rapidly on exposure to air, stable only in the driest atmospheres.

Classification of BobjonesiteHide

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

Pronounciation of BobjonesiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of BobjonesiteHide

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

Optical Data of BobjonesiteHide

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 BobjonesiteHide

(V4+O)(SO4) · 3H2O
IMA Formula:
V4+O(SO4) · 3H2O

Crystallography of BobjonesiteHide

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 V:
633.5 ų

Type Occurrence of BobjonesiteHide

Synonyms of BobjonesiteHide

Other Language Names for BobjonesiteHide

Simplified Chinese:单斜钒矾
Traditional Chinese:單斜釩礬

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Bobjonesite associated with KarpoviteTl2VO(SO4)2(H2O)
1 photo of Bobjonesite associated with SzomolnokiteFeSO4 · H2O

Related Minerals - Nickel-Strunz GroupingHide

7.DB.05AubertiteCuAl(SO4)2Cl · 14H2OTric. 1
7.DB.05Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2OTric. 1 : P1
7.DB.05Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2OTric.
7.DB.10KhademiteAl(SO4)F · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.10RostiteAl(SO4)(OH) · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.15JurbaniteAl(SO4)(OH) · 5H2OMon.
7.DB.20Minasragrite(V4+O)(SO4) · 5H2OMon. 2/m
7.DB.20Orthominasragrite(V4+O)(SO4) · 5H2OOrth. mm2 : Pmn21
7.DB.20Anorthominasragrite(V4+O)(SO4) · 5H2OTric. 1 : P1
7.DB.30AmarantiteFe3+2(SO4)2O · 7H2OTric. 1
7.DB.30HohmanniteFe3+2(SO4)2O · 8H2OTric. 1
7.DB.30MetahohmanniteFe3+2(SO4)2O · 4H2OTric. 1 : P1
7.DB.35AluminocopiapiteAl2/3Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CalciocopiapiteCaFe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CuprocopiapiteCu2+Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35FerricopiapiteFe3+0.67Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2OTric.

Other InformationHide

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 BobjonesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 BobjonesiteHide

Localities for BobjonesiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Kamchatka Krai
    • 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 Mining District (California Mining District)
collected by Eckhard D. Stuart; PXRD Dr. Anthony R. Kampf
  • Utah
    • Emery Co.
      • San Rafael Mining District (San Rafael Swell)
        • Temple Mountain
M. Schindler et al. (2003) Can. Mineral. 41, 83-90
Patrick Haynes
Mineral and/or Locality  
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