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Utahite

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About UtahiteHide

Flag of Utah
Formula:
Cu5Zn3(TeO4)4(OH)8 · 7H2O
Colour:
Light blue, blue-green
Lustre:
Vitreous, Pearly
Hardness:
4 - 5
Specific Gravity:
5.33 (Calculated)
Crystal System:
Triclinic
Name:
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 UtahiteHide

Approved
First Published:
1997
7.DE.25

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.:
33.1.5.1

Physical Properties of UtahiteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
Light blue, blue-green
Streak:
Pale blue
Hardness:
4 - 5 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
5.33 g/cm3 (Calculated)

Optical Data of UtahiteHide

Type:
Biaxial
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
Dispersion:
strong

Chemical Properties of UtahiteHide

Formula:
Cu5Zn3(TeO4)4(OH)8 · 7H2O
IMA Formula:
Cu5Zn3(Te6+O4)4(OH)8 · 7H2O

Crystallography of UtahiteHide

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

Type Occurrence of UtahiteHide

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:

Synonyms of UtahiteHide

Other Language Names for UtahiteHide

German:Utahit
Spanish:Utahita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Mcalpineite1 photo of Utahite associated with Mcalpineite on mindat.org.
Leisingite1 photo of Utahite associated with Leisingite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DE.05MangazeiteAl2(SO4)(OH)4 · 3H2OTric.
7.DE.10CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OOrth.
7.DE.10CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OOrth.
7.DE.10UKI-1975-(SO:AlCu)(Cu, Al, SO4, H2O)
7.DE.15SchwertmanniteFe3+16(OH,SO4)12-13O16 · 10-12H2OTet.
7.DE.20TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
7.DE.35CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)Tric. 1 : P1
7.DE.40OsakaiteZn4(SO4)(OH)6 · 5H2OTric. 1 : P1
7.DE.45WilcoxiteMgAl(SO4)2F · 17H2OTric. 1 : P1
7.DE.50Stanleyite(V4+O)(SO4) · 6H2OOrth.
7.DE.55McalpineiteCu3(Te6+O6)Iso. m3 (2/m 3) : Ia3
7.DE.60HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2OMon.
7.DE.62VolaschioiteFe4(SO4)O2(OH)6 · 2H2OMon. 2/m : B2/m
7.DE.65ZaheriteAl12(SO4)5(OH)26 · 20H2OTric.
7.DE.70LautenthalitePbCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
7.DE.75CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1

Other InformationHide

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 UtahiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 UtahiteHide

Localities for UtahiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA
 
  • 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.
            • Mammoth Peak
Collected by and in the collection of Brent Thorne. EDS analyzed by Kaygeedee minerals.
Mineral and/or Locality  
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