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Leisingite Mineral Data

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General Leisingite Information

Help on Chemical  Formula: Chemical Formula: Cu(Mg,Cu,Fe,Zn)2Te++++++O6•6(H2O)
Help on Composition: Composition: Molecular Weight = 481.14 gm
   Magnesium   5.05 %  Mg    8.38 % MgO
   Zinc        2.72 %  Zn    3.38 % ZnO
   Iron        3.48 %  Fe    4.48 % FeO
   Copper     19.81 %  Cu   14.87 % Cu2O /  8.27 % CuO
   Tellurium  26.52 %  Te   33.17 % TeO2
   Hydrogen    2.51 %  H    22.47 % H2O
   Oxygen     39.90 %  O
             ______        ______ 
             100.00 %       95.01 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuMgCu0.5Fe2+0.3Zn0.2TeO6•6(H2O)
Help on Environment: Environment: From a secondary alteration zone.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: The dumps of the Centennial Eureka mine, Tintic District, Juab County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Mr. Joseph F. Leising (1949-), geologist and mineral collector of Reno, Nevada, USA.
Help on Name Pronunciation: Name Pronunciation: Leisingite + Pronunciation Say LEISINGITE
Help on Synonym: Synonym: ICSD 76868

Leisingite Image

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Comments: Very small yellow crystal of Leisingite on quartz.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Leisingite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.82714
Help on Cell Dimensions: Cell Dimensions: a = 5.305, c = 9.693, Z = 1; V = 236.24 Den(Calc)= 3.38
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 31m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.7(1), 4.834(0.8), 2.556(0.7),2.326(0.7),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Leisingite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Yellowish orange.
Help on Density: Density: 3.41
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: light yellow

Optical Properties of Leisingite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.088 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.08 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2047,KPDmeas= 0.2029,KC= 0.2224
Ncalc = 1.75 - 1.76
Help on Optical Data: Optical Data: Uniaxial (-), e=1.581, w=1.803, bire=0.2220.

Calculated Properties of Leisingite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Leisingite =3.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PELeisingite = 96.76 barns/electron
U=PELeisingite x rElectron Density= 311.74 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Leisingite is Not Radioactive

Leisingite 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
  (33.02.09)Dana Group Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6•6(H2O) P 31m 3 2/m
Help on  Strunz Class: Strunz Class: 04.FL.65 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FL -Hydroxides with H2O � (OH); sheets of edge-sharing octahedra
04.FL.65 Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6•6(H2O) P 31m 3 2/m

Other Leisingite Information

Help on References: References: NAME( MinRec, Vol 28, No. 3) PHYS. PROP.(Min.Mag.,Vol.60,p653-657,1996) OPTIC PROP.(MinRec, Vo. 28, No. 3)
Help on See Also: See Also: Links to other databases for Leisingite :
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

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Dana No: Strunz No: 04.FL.65





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