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Flag of Utah
Cu5Zn3(TeO4)4(OH)8 · 7H2O
Light blue, blue-green
Vitreous, Pearly
4 - 5
Named by Andrew C. Roberts, J.A.R. Stirling, A.J. Criddle, M.C. Jensen, E.A. Moffatt, and W.E. Wilson in 1997 for the state of Utah, U.S.A. that includes the type locality.

Not to be confused with Utahlite, a synonym of Variscite.
This page provides mineralogical data about Utahite.

Classification of Utahite

First Published:

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
Dana 7th ed.:

Physical Properties of Utahite

Vitreous, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Light blue, blue-green
Pale blue
Hardness (Mohs):
4 - 5
5.33 g/cm3 (Calculated)

Optical Data of Utahite

RI values:
nα = 1.830 - 1.840 nβ = 1.830 - 1.900 nγ = 1.880 - 1.900
Max Birefringence:
δ = 0.050 - 0.060
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Utahite

Cu5Zn3(TeO4)4(OH)8 · 7H2O
Elements listed in formula:

Crystallography of Utahite

Crystal System:
Prismatic to thin tabular to bladed crystals, elongated along [001], showing {010} and {001}.

Type Occurrence of Utahite

General Appearance of Type Material:
Parallel to subparallel aggregates, to 0.6 mm, also as sheaves and bowtie like groups.
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, Canada, 67415.
The Natural History Museum, London, England, 1994,99.
Associated Minerals at Type Locality:

Relationship of Utahite to other Species

7.DE.05MangazeiteAl2SO4(OH)4 · 3H2O
7.DE.10CarbonatecyanotrichiteCu4Al2CO3(OH)12 · 2H2O
7.DE.10CyanotrichiteCu4Al2SO4(OH)12 · 2H2O
7.DE.10UKI-1975-(SO:AlCu)(Cu, Al, SO4, H2O)
7.DE.15SchwertmanniteFe163+O16(OH)9.6(SO4)3.2 · 10H2O
7.DE.20TlalociteCu10Zn6(Te4+O3)(Te6+O4)2Cl(OH)25 · 27H2O
7.DE.35CoquanditeSb3+6+xO8+x(SO4)(OH)x · (H2O)1-x (x = 0.3)
7.DE.40OsakaiteZn4SO4(OH)6 · 5H2O
7.DE.45WilcoxiteMgAl(SO4)2F · 18H2O
7.DE.50StanleyiteV4+O(SO4) · 6H2O
7.DE.60HydrobasaluminiteAl4(SO4)(OH)10 · 15H2O
7.DE.62VolaschioiteFe4(SO4)O2(OH)6 · 2H2O
7.DE.65ZaheriteAl12(SO4)5(OH)26 · 20H2O
7.DE.70LautenthalitePbCu4(SO4)2(OH)6 · 3H2O

Other Names for Utahite

Name in Other Languages:

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 Utahite

Reference List:
Roberts, A.C., Stirling, J.A.R., Criddle, A.J., Jensen, M.C., Moffatt, E.A., Wilson, W.E. (1997) Utahite, a new mineral and associated copper tellurates from the Centennial Eureka mine, Tintic District, Juab County, Utah. The Mineralogical Record: 28: 175-179.

Jambor, J.L., Grew, E.S., Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 185-189.

Mandarino, J.A. (1998) Abstracts of New Mineral Descriptions. Mineralogical Record: 29: 478.

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

Localities for Utahite

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.
  • Arizona
    • Cochise Co.
      • Tombstone Hills
        • Tombstone District
Dr. Peter Megaw, analysis by Dr. Malcomb E. Back, Royal Ontario Museum, Canada.
  • Utah
    • Juab Co.
      • East Tintic Mts
        • Tintic District
          • Eureka
MR 28, pg175-179 (1997); MR 29, #5, pg478 (1998)
          • Mammoth
Collected by and in the collection of Brent Thorne.
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