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Cu5Zn3(TeO4)4(OH)8 · 7H2O
Light blue, blue-green
Vitreous, Pearly
4 - 5
Named after its discovery locality, Centennial Eureka Mine, Tintic District, Utah, USA.
This page provides mineralogical data about Utahite.

Classification of Utahite


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.: URL:
Please feel free to link to this page.

Type Occurrence of Utahite

Physical Properties of Utahite

Vitreous, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Light blue, blue-green
Hardness (Mohs):
4 - 5

Crystallography of Utahite

Crystal System:

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
All elements listed in formula:

Relationship of Utahite to other Species

7.DE.05MangazeiteAl2(SO4)(OH)4 · 3H2O
7.DE.10CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2O
7.DE.10CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
7.DE.10UKI-1975-(SO:AlCu)(Cu, Al, SO4, H2O)
7.DE.15SchwertmanniteFe163+(OH,SO4)12-13O16 · 10-12H2O
7.DE.20TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O
7.DE.35CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)
7.DE.40OsakaiteZn4(SO4)(OH)6 · 5H2O
7.DE.45WilcoxiteMgAl(SO4)2F · 17H2O
7.DE.50Stanleyite(V4+O)(SO4) · 6H2O
7.DE.60HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2O
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:
Mineralogical Record (1997): 28: 175-179.

Mineralogical Record (1998): 29: 478.

Internet Links for Utahite

Localities for Utahite

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 Brent Thorne
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