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Bobjonesite

Formula:
(V
4+
 
O)[SO
 
4
] · 3H
 
2
O
System:MonoclinicColour:pale blue, blue-green
Hardness:1
Name:For Robert (Bob) Jones (b.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

IMA status:Approved 2000
Strunz 8th edition ID:6/D.05-05
Nickel-Strunz 10th (pending) edition ID: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
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Type Occurrence of Bobjonesite

Type Locality:North Mesa Mine group, San Rafael District (San Rafael Swell), Emery Co., Utah, USA
Year of Discovery:2003

Physical Properties of Bobjonesite

Lustre:Vitreous
Colour:pale blue, blue-green
Streak:pale blue
Hardness (Mohs):1
Cleavage:None Observed
Density (calculated):2.28 g/cm3

Crystallography of Bobjonesite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 7.394Å, b = 7.4111Å, c = 12.0597Å
β = 106.55°
Ratio:a:b:c = 0.998 : 1 : 1.627
Unit Cell Volume:V 633.5 ų
Z:4

Optical Data of Bobjonesite

Type:Biaxial (+)
RI values: nα = 1.555 nβ = 1.561 nγ = 1.574
2V:Measured: 72° , Calculated: 69°
Maximum Birefringence:δ = 0.019

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Pleochroism:Non-pleochroic

Chemical Properties of Bobjonesite

Formula:
(V
4+
 
O)[SO
 
4
] · 3H
 
2
O
All elements listed in formula:H, O, S, V

Relationship of Bobjonesite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.DB.05Aubertite
CuAl[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Magnesioaubertite
(Mg,Cu)Al[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.05Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)[F|(SO
 
4
)
 
2
] · 14H
 
2
O
7.DB.10Khademite
Al[F|SO
 
4
] · 5H
 
2
O
7.DB.10Rostite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.15Jurbanite
Al[OH|SO
 
4
] · 5H
 
2
O
7.DB.20Minasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Orthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.20Anorthominasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
7.DB.30Amarantite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 7H
 
2
O
7.DB.30Hohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 8H
 
2
O
7.DB.30Metahohmannite
Fe
3+
2
[O|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DB.35Aluminocopiapite
Al
 
2/3
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Calciocopiapite
CaFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·10H
 
2
O
7.DB.35Copiapite
Fe
2+
 
Fe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Cuprocopiapite
CuFe
 
4
(SO
 
4
)
 
6
(OH)
 
2
·20H
 
2
O
7.DB.35Ferricopiapite
Fe
 
5
(SO
 
4
)
 
6
O(OH)·20H
 
2
O
7.DB.35Magnesiocopiapite
MgFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 20H
 
2
O
7.DB.35Zincocopiapite
ZnFe
3+
4
[OH|(SO
 
4
)
 
3
]
 
2
 · 18H
 
2
O

Other Names for Bobjonesite

Synonyms:
IMA2000-045
Other Languages:
German:Bobjonesit
Russian:Бобджонесит
Spanish:Bobjonesita

Other Information

Health Warning: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.

Articles/Blogs about Bobjonesite

Internet Links for Bobjonesite

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    Localities for Bobjonesite

    (TL) indicates type locality. ? 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.
    USA
     
    • Utah
      • Emery Co.
        • San Rafael District (San Rafael Swell)
    		M. Schindler et al. (2003) Can. Mineral. 41, 83-90
    Mineral and/or Locality
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