Jurbanite
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About Jurbanite
Formula:
Al(SO4)(OH) · 5H2O
Colour:
colourless
Lustre:
Vitreous
Hardness:
2½
Specific Gravity:
1.786
Crystal System:
Monoclinic
Name:
Named in honor of Joseph John Urban (27 October 1915, Chester, Pennsylvania, USA – 1997), Tucson, Arizona, USA, mineral collector who first observed the natural material.
Type Locality:
Dimorph of:
Classification of Jurbanite
Approved
Approval year:
1974
First published:
1976
6/D.06-10
7.DB.15
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
31.9.10.1
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
25.6.2
25 : Sulphates
6 : Sulphates of Al and Tl
25 : Sulphates
6 : Sulphates of Al and Tl
Physical Properties of Jurbanite
Vitreous
Transparency:
Transparent
Colour:
colourless
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Density:
1.786(8) g/cm3 (Measured)
Optical Data of Jurbanite
Type:
Biaxial (-)
RI values:
nα = 1.459 nβ = 1.473 nγ = 1.483
2V:
Measured: 80° , Calculated: 78°
Max Birefringence:
δ = 0.024

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none
Chemical Properties of Jurbanite
Formula:
Al(SO4)(OH) · 5H2O
Elements listed:
Crystallography of Jurbanite
Crystal System:
Monoclinic
Cell Parameters:
a = 8.39 Å, b = 12.48 Å, c = 8.15 Å
β = 101.9°
β = 101.9°
Ratio:
a:b:c = 0.672 : 1 : 0.653
Unit Cell V:
835.02 ų (Calculated from Unit Cell)
Morphology:
Minute crystals and stalactites.
Crystallographic forms of Jurbanite
Crystal Atlas:
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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) |
---|---|---|---|---|---|---|---|
0010939 | Jurbanite | Sabelli C (1985) Refinement of the crystal structure of jurbanite, Al(SO4)(OH)*5H2O Zeitschrift fur Kristallographie 173 33-39 | ![]() | 1985 | Cetine mine, Tuscany, Italy | 0 | 293 |
CIF Raw Data - click here to close
Type Occurrence of Jurbanite
General Appearance of Type Material:
small, clear, colorless crystals
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 144003.
Geological Setting of Type Material:
post-mine stalactite
Reference:
Anthony, J.W. and McLean, W.J. (1976) Jurbanite, a new post-mining aluminum sulfate mineral from San Manuel, AZ. American Mineralogist: 61: 1-4.
Synonyms of Jurbanite
Other Language Names for Jurbanite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O | Tric. 1 |
7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O | Tric. 1 : P1 |
7.DB.05 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O | Tric. |
7.DB.10 | Khademite | Al(SO4)F · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O | Mon. 2/m |
7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O | Orth. mm2 : Pmn21 |
7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O | Tric. 1 : P1 |
7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O | Mon. 2/m |
7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O | Tric. 1 |
7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O | Tric. 1 |
7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O | Tric. 1 : P1 |
7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Calciocopiapite | CaFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
25.6.1 | Rostite | Al(SO4)(OH) · 5H2O | Orth. mmm (2/m 2/m 2/m) |
25.6.3 | Khademite | Al(SO4)F · 5H2O | Orth. mmm (2/m 2/m 2/m) |
25.6.4 | Meta-aluminite | Al2(SO4)(OH)4 · 5H2O | Mon. 2/m |
25.6.5 | Aluminite | Al2(SO4)(OH)4 · 7H2O | Mon. 2/m : P21/b |
25.6.6 | Meta-alunogen | Al2(SO4)3 · 12H2O | |
25.6.7 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 |
25.6.8 | Felsőbányaite | Al4(SO4)(OH)10 · 4H2O | Mon. 2 : P21 |
25.6.9 | Basaluminite | Al4(SO4)(OH)10 · 4H2O | Hex. |
25.6.10 | Hydrobasaluminite | Al4(SO4)(OH)10 · 12-36H2O | Mon. |
25.6.11 | Zaherite | Al12(SO4)5(OH)26 · 20H2O | Tric. |
25.6.12 | Tamarugite | NaAl(SO4)2 · 6H2O | Mon. 2/m |
25.6.13 | Mendozite | NaAl(SO4)2 · 11H2O | Mon. 2/m |
25.6.14 | Alum-(Na) | NaAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
25.6.15 | Natroalunite | NaAl3(SO4)2(OH)6 | Trig. 3m : R3m |
25.6.16 | Kalinite | KAl(SO4)2 · 11H2O | Mon. 2/m : B2/b |
25.6.17 | Alum-(K) | KAl(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
25.6.18 | Alunite | KAl3(SO4)2(OH)6 | Trig. 3m : R3m |
25.6.19 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
25.6.20 | Tschermigite | (NH4)Al(SO4)2 · 12H2O | Iso. m3 (2/m 3) : Pa3 |
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 Jurbanite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Anthony, J.W. and McLean, W.J. (1976) Jurbanite, a new post-mining aluminum sulfate mineral from San Manuel, AZ. American Mineralogist: 61: 1-4.
Sabelli, C. (1985) Refinement of the crystal structure of jurbanite, Al(SO4)(OH)·5H2O. Zeitschrift für Kristallographie: 173: 33-39.
Internet Links for Jurbanite
mindat.org URL:
https://www.mindat.org/min-2125.html
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Localities for Jurbanite
Locality List




All localities listed without proper references should be considered as questionable.
Canada | |
| Geological Association of Canada (2014) Abstracts Fredericton Vol 37 |
Chile | |
| Gunnar Färber |
Czech Republic | |
| Zacek, V., Oplustil, S., Mayova, A. & Meyer, F. R. (1995): Die Mineralien von Kladno in Mittelböhmen, Tschechische Republik. Mineralien-Welt 6 (1), 13-30 (in German). |
France | |
| Audra, P. and Hobléa, F. (2007): The first cave occurence of jurbanite [Al(OHSO4)·5H2O, associated with alunogen [Al2(SO4)3·17H2O] and tschermigite [NH4Al(SO4)2·12H2O]: thermal-sulfidic serpents cave, France. Journal of Cave and Karst Studies, 69, 243–249. |
Italy | |
| Sabelli C. (1984) - I minerali delle Cetine di Cotorniano (SI); I solfati dimorfi jurbanite e rostite. Periodico di Mineralogia, Roma, pp. 53-65 and Brizzi G., Ciselli I, Santucci A. (1986) - Ultime novità da le Cetine di Cotorniano - Riv. Miner. Ital., Milano, fasc. 3, pp.145-155; Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p. |
Japan | |
| Seki, Y., Hirano, T., & Watanabe, K. (1987). Salt crystallization decay and water-rock interaction of rock-cliff Budda sculptures at Yakushido Temple of Odaka Town, Fukushima, Japan. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 82(7), 269-279. |
USA (TL) | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 264; Anthony, J.W. & W.J. McLean (1976), Jurbanite, a new post-mining aluminum sulfate mineral from San Manuel, AZ, Am.Min.: 61: 1-4. |
| Minerals of Colorado (1997) Eckel, E. B. |
| Coskren, T. D. & Lauf, R. J. (2000): The Minerals of Alum Cave Bluff, Great Smoky Mountains, Tennessee. Mineralogical Record, 31, 163-175.; Rocks & Min. (2007) 82:235 |
Cerros Pintados, Tamarugal Province, Tarapacá, Chile