Mineralogy Database

Utahite Mineral Data

Search Webmineral :

General Utahite Information

Help on Chemical  Formula: Chemical Formula: Cu5Zn3(Te++++++O4)4(OH)8•7(H2O)
Help on Composition: Composition: Molecular Weight = 1,542.46 gm
   Zinc       12.72 %  Zn   15.83 % ZnO
   Copper     20.60 %  Cu   25.79 % CuO
   Tellurium  33.09 %  Te   41.39 % TeO2
   Hydrogen    1.44 %  H    12.85 % H2O
   Oxygen     32.16 %  O
             ______        ______ 
             100.00 %       95.85 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu5Zn3(TeO4)4(OH)8•7(H2O)
Help on Environment: Environment: An extremely rare secondary Cu-Te mineral found as a product of oxidation.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: The Centennial Eureka mine, 1 mile southeast of Eureka, Tintic District, Juab County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Utahite Say UTAHITE
Help on Synonym: Synonym: IMA1995-039

Utahite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Blue utahite grain in matrix.
Location: Centennial Eureka Mine, Tintic District (East Tintic Mountains), Juab Co., Utah, USA. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Utahite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8797:1:0.5662
Help on Cell Dimensions: Cell Dimensions: a = 8.794, b = 9.996, c = 5.66, Z = 1; alpha = 104.1°, beta = 90.066°, gamma = 96.3333° V = 479.61 Den(Calc)= 5.34
Help on Crystal System: Crystal System: Triclinic Space Group: P1 or P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.841(1), 9.638(1), 2.747(0.6),8.736(0.5),

Physical Properties of Utahite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pale blue, Greenish blue.
Help on Density: Density: 5.33
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: pale blue

Optical Properties of Utahite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.172 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.174 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1617,KPDmeas= 0.162,KC= 0.1957
Ncalc = 2.04 - 2.05
Help on Optical Data: Optical Data: Biaxial (?), a=1.83-1.84, b=1.83-1.9, g=1.88-1.9, bire=0.0500-0.0600
Help on RL Bireflectance: RL Bireflectance: Slight.
Help on RL Color: RL Color: Pale brown with green internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.

Calculated Properties of Utahite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.93 gm/cc
note: Specific Gravity of Utahite =5.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEUtahite = 125.84 barns/electron
U=PEUtahite x rElectron Density= 620.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Utahite is Not Radioactive

Utahite Classification

Help on  Dana Class: Dana Class: (33)Selenates and Tellurates
  (33.02)as A+ (B++)m XO6 Zq � x(H2O) where x can equal 0
  (33.02.08)Dana Group Utahite! Cu5Zn3(TeO4)4(OH)8•7(H2O) P1 or P1 Tri
Help on  Strunz Class: Strunz Class: 07.DE.25 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DE -With only medium-sized cations; unclassified
07.DE.25 Utahite! Cu5Zn3(TeO4)4(OH)8•7(H2O) P1 or P1 Tri

Other Utahite Information

Help on References: References: NAME( MinRec, Vol. 28, No. 3) PHYS. PROP.(Eur. J. Min.,Vol.8,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,1996)
Help on See Also: See Also: Links to other databases for Utahite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Utahite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Utahite :

Ask about Utahite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

Print or Cut-and-Paste your Utahite Specimen Label here :


Dana No: Strunz No: 07.DE.25





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.