Leisingite Mineral Data

Leisingite Mineral Data +

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General Leisingite Information

Chemical Formula:

Cu(Mg,Cu,Fe,Zn)2Te++++++O6·6(H2O)

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

Empirical Formula:

CuMgCu_0.5Fe²⁺_0.3Zn_0.2TeO₆·6(H₂O)

Environment:

From a secondary alteration zone.

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

The dumps of the Centennial Eureka mine, Tintic District, Juab County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

For Mr. Joseph F. Leising (1949-), geologist and mineral collector of Reno, Nevada, USA.

Synonym:

ICSD 76868

IMA1995-011

Leisingite Image

Images:

Leisingite

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

Axial Ratios:

a:c = 1:1.82714

Cell Dimensions:

a = 5.305, c = 9.693, Z = 1; V = 236.24 Den(Calc)= 3.38

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 31m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 9.7(1), 4.834(0.8), 2.556(0.7),2.326(0.7),

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Crystal Structure:

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Margison S M , Grice J D , Groat L A , The Canadian Mineralogist , 35 (1997) p.759-763, The crystal structure of leisingite, (Cu,Mg,Zn)2(Mg,Fe)TeO6.6H2O

Physical Properties of Leisingite

Cleavage:

[001] Perfect

Color:

Yellow, Yellowish orange.

Density:

3.41

Diaphaniety:

Transparent to Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous - Silky

Streak:

light yellow

Optical Properties of Leisingite

Optical Data:

Uniaxial (-), e=1.581, w=1.803, bire=0.2220.

Calculated Properties of Leisingite

Electron Density:

r_electron=3.22 gm/cc
note: r_Leisingite=3.38 gm/cc.

Fermion Index

Fermion Index = 0.02828
Boson Index = 0.97172

Photoelectric:

PE_Leisingite= 96.76 barns/electron
U=PE_Leisingite x r_electron= 311.74 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Leisingite is Not Radioactive

Leisingite Classification

Dana Class:

33.2.9.1 (33)Selenates and Tellurates

(33.2)as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0

(33.2.9)Dana Group

33.2.9.1 Leisingite ! Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m

Strunz Class:

IV/K.15-18 IV - Oxides

IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups

IV/K.15 - Yafsoanite - Cuzticite series

IV/K.15-10 Frankhawthorneite Cu2TeO4(OH)2 P 2₁/n 2/m

IV/K.15-12 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho

IV/K.15-15 Mcalpineite Cu3TeO6·(H2O) Unk Cubic

IV/K.15-16 Jensenite Cu3TeO6·2(H2O) P 2₁/n 2/m

IV/K.15-18 Leisingite Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m

IV/K.15-19 Utahite! Cu5Zn3(TeO4)4(OH)8·7(H2O) P1 or P1 Tri

IV/K.15-20 Cuzticite Fe2TeO6·3(H2O) Unk Hex

IV/K.15-30 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m

IV/K.15-40 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m

IV/K.15-50 Parakhinite Cu3PbTeO4(OH)6 P 6₂22 or P 6₄22 6 2 2

IV/K.15-60 Montanite Bi2TeO6·2(H2O) Mono

Other Leisingite Information

References:

NAME( MinRec, Vol 28, No. 3) PHYS. PROP.(Min.Mag.,Vol.60,p653-657,1996) OPTIC PROP.(MinRec, Vo. 28, No. 3)

See Also:

Links to other databases for Leisingite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST

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

Leisingite

Cu(Mg,Cu,Fe,Zn)2Te++++++O6·6(H2O)
Dana No: 33.2.9.1 Strunz No: IV/K.15-18
Locality:

Notes: