Jurbanite is a

sulfate mineral The sulfate minerals are a class of minerals that include the sulfate ion () within their structure. The sulfate minerals occur commonly in primary evaporite depositional environments, as gangue minerals in hydrothermal veins and as secondary mine ...

with the chemical formula Al S O₄(O H)·5 H₂O. Its molecular weight is 230.13 g/mol. It crystallizes in the

monoclinic In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic s ...

system and is dimorphous with the orthorhombic mineral rostite. Jurbanite occurs as a secondary (post-mine) mineral in mines containing

sulfide mineral The sulfide minerals are a class of minerals containing sulfide (S2−) or disulfide (S22−) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, th ...

s. Jurbanite was first described for an occurrence in the San Manuel mine of

Pinal County Pinal County is in the central part of the U.S. state of Arizona. According to the 2020 census, the population of the county was 425,264, making it Arizona's third-most populous county. The county seat is Florence. The county was founded in 187 ...

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

and first described in 1976s. It was named for Joseph John Urban, the mineral collector who discovered it.Mindat.org - Jurbanite
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References

Aluminium minerals Sulfate minerals Monoclinic minerals Minerals in space group 14 Minerals described in 1976 {{sulfate-mineral-stub