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Utahite

A valid IMA mineral species
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About UtahiteHide

08828190014947233173094.jpg
Flag of Utah
Formula:
MgCu4Zn2Te6+3O14(OH)4 · 6H2O
formerly given as Cu5Zn3(TeO4)4(OH)8.7H2O; changed due to approval of the proposal IMA 20-C
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.
Unique combination of elements (status: July 2021).


Unique IdentifiersHide

Mindat ID:
7348
Long-form identifier:
mindat:1:1:7348:2
GUID
(UUID V4):
8e4cf76e-a20a-452f-a198-22f40131e6e6

IMA Classification of UtahiteHide

Classification of UtahiteHide

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
UtaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

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
Anisotropism:
Anisotropy is unknown; it is masked by the internal reflections
Dispersion:
strong
Optical Extinction:
Does not extinguish
Colour in reflected light:
Very pale brown
Internal Reflections:
Pale green

Chemistry of UtahiteHide

Mindat Formula:
MgCu4Zn2Te6+3O14(OH)4 · 6H2O

formerly given as Cu5Zn3(TeO4)4(OH)8.7H2O; changed due to approval of the proposal IMA 20-C

Crystallography of UtahiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.6831(4) Å, b = 8.7793(6) Å, c = 9.9818(9) Å
α = 95.415(7)°, β = 104.129(7)°, γ = 90.098(6)°
Ratio:
a:b:c = 0.647 : 1 : 1.137
Unit Cell V:
480.65 ų
Morphology:
Prismatic to thin tabular to bladed crystals, elongated along [001], showing {010} and {001}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.638 Å(100)
4.841 Å(100)
2.747 Å(60)
8.736 Å(50)
2.600 Å(45)
6.862 Å(40)
6.172 Å(40)
4.152 Å(40)
3.129 Å(40)
2.165 Å(40)
Comments:
Centennial Eureka mine, Utah, USA. Data from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47e : [Vanadates, chromates, manganates]
Stage 10b: Anthropogenic minerals<10 Ka
55 : Anthropogenic mine minerals

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:
Reference:
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.

Synonyms of UtahiteHide

Other Language Names for UtahiteHide

German:Utahit
Spanish:Utahita

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Utahite associated with LeisingiteCu2MgTe6+O6 · 6H2O
4 photos of Utahite associated with QuartzSiO2
3 photos of Utahite associated with YafsoaniteCa3Te6+2(ZnO4)3
2 photos of Utahite associated with Goethiteα-Fe3+O(OH)
1 photo of Utahite associated with McalpineiteCu3(Te6+O6)
1 photo of Utahite associated with Eurekadumpite(Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O
1 photo of Utahite associated with RaisaiteCuMg[Te6+O4(OH)2] · 6H2O
1 photo of Utahite associated with BaryteBaSO4
1 photo of Utahite associated with GoldAu
1 photo of Utahite associated with ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2O

Related Minerals - Strunz-mindat GroupingHide

7.DE.Cossaite(Mg0.5,◻)Al6(SO4)6(HSO4)F6 · 36H2OTrig. 3 : R3
7.DE.MagnesioalteriteMg2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.LiangjuniteK2(Mo2O5)(SO4)2 · 3H2OTric. 1 : P1
7.DE.FabritziteZn9(SO4)2(OH)12Cl2 · 6H2OTrig. 3 : R3
7.DE.DownsiteK2(MoO3)3(SO4) · 4H2OMon. 2/m : B2/m
7.DE.05MangazeiteAl2(SO4)(OH)4 · 3H2OTric.
7.DE.10CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OMon. 2/m : B2/m
7.DE.10CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OMon. 2/m : B2/m
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.42AlteriteZn2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.45WilcoxiteMgAl(SO4)2F · 17H2OTric. 1 : P1
7.DE.45BarrotiteCu9Al(HSiO4)2[(SO4)(HAsO4)0.5](OH)12 · 8H2OTrig. 3
7.DE.47Tiberiobardiite{Cu9Al[SiO3(OH)]2(OH)12(H2O)6}(SO4)1.5 · 10H2OTrig. 3 : R3
7.DE.50Stanleyite(V4+O)(SO4) · 6H2OOrth.
7.DE.50Bouškaite(MoO2)2O(SO3OH)2(H2O)4Tric. 1 : P1
7.DE.57KhangalasiteFe(SO4)(OH) · 2H2OTric.
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.75CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1

Fluorescence of UtahiteHide

Nonfluorescent under both longwave and shortwave ultraviolet light.

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.

Internet Links for UtahiteHide

References for UtahiteHide

Localities for UtahiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
USA
 
  • Arizona
    • Cochise County
      • Tombstone Mining District
Dr. Peter Megaw
Specimens analyzed by the University of ...
  • Nevada
    • Lincoln County
      • Delamar Mining District
        • Delamar Mine
Kampf et al. (2022)
  • Utah
    • Juab County
      • Tintic Mining District
        • Eureka
Roberts et al. (1997) +2 other references
        • Mammoth
Thorne (n.d.)
Collected by and in the collection of ...
Collected by and in the collection of ...
 
Mineral and/or Locality  
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