Mcalpineite Mineral Data

Mcalpineite Mineral Data +

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General Mcalpineite Information

Chemical Formula:

Cu++3Te++++++O6·(H2O)

Composition:

Molecular Weight = 432.25 gm

Copper 44.10 % Cu 55.21 % CuO

Tellurium 29.52 % Te 36.92 % TeO₂

Hydrogen 0.47 % H 4.17 % H₂O

Oxygen 25.91 % O

______ ______

100.00 % 96.30 % = TOTAL OXIDE

Empirical Formula:

Cu₃TeO₆·(H₂O)

Environment:

On quartz associated with chromian muscovite.

IMA Status:

Approved IMA 1994

Locality:

McAlpine mine, Tuolumne County, California, USA. Link to MinDat.org Location Data.

Name Origin:

For the mine at the type locality.

Synonym:

IMA1992-025

Mcalpineite Image

Images:

Mcalpineite

Comments: Dark green crystals of mcalpineite in matrix.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 1.7 mm.
© Thomas Witzke / Abraxas-Verlag

Mcalpineite Crystallography

Cell Dimensions:

a = 9.555, Z = 8; V = 872.35 Den(Calc)= 6.58

Crystal System:

IsometricSpace Group: Unk

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

By Intensity(I/I_o): 2.763(1), 1.689(0.8), 2.384(0.7),

Physical Properties of Mcalpineite

Cleavage:

None

Color:

Emerald green, Olive green, Dark greenish black.

Density:

6.63

Diaphaniety:

Transparent to translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Streak:

light green

Optical Properties of Mcalpineite

Gladstone-Dale:

CI meas= 0.164 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.158 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1535,KPDmeas= 0.1523,KC= 0.1822

Optical Data:

Isotropic, n=2.01.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Mcalpineite in Air**
λ	R	∑ R(λ)
470 nm	12.80
546 nm	11.60
589 nm	11.20
650 nm	11.00

**Calculated Relative Intensity Colors of Mcalpineite in Air**
Relative Intensity	0%	80%	100%	160%	240%	320%	400%	480%	560%	640%	720%	790%
R

Calculated Properties of Mcalpineite

Electron Density:

r_electron=6.00 gm/cc
note: r_Mcalpineite=6.58 gm/cc.

Fermion Index

Fermion Index = 0.02371
Boson Index = 0.97629

Photoelectric:

PE_Mcalpineite= 119.76 barns/electron
U=PE_Mcalpineite x r_electron= 718.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Mcalpineite is Not Radioactive

Mcalpineite Classification

Dana Class:

33.2.5.1 (33)Selenates and Tellurates

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

(33.2.5)Dana Group

33.2.5.1 Mcalpineite Cu3TeO6·(H2O) Unk Cubic

Strunz Class:

IV/K.15-15 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 Mcalpineite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p631,1995) OPTIC PROP.(MinRec, v 27, p 118)

See Also:

Links to other databases for Mcalpineite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Mcalpineite

Cu++3Te++++++O6·(H2O)
Dana No: 33.2.5.1 Strunz No: IV/K.15-15
Locality:

Notes: