Mcalpineite Mineral Data

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.

Name Pronunciation:

Mcalpineite + Pronunciation

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:

Isometric Space 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

Diaphaneity:

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
Ncalc = 2.2 - 2.21

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:

Bulk Density (Electron Density)=6.00 gm/cc
note: Specific Gravity of Mcalpineite =6.58 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Mcalpineite= 119.76 barns/electron
U=PE_Mcalpineite x rElectron Density= 718.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mcalpineite is Not Radioactive

Mcalpineite Classification

Dana Class:

33.02.05.01 (33)Selenates and Tellurates

(33.02)as A+ (B++)m XO6 Zq ï¿½ x(H2O) where x can equal 0

(33.02.05)Dana Group

33.02.05.01 Mcalpineite Cu3TeO6•(H2O) Unk Cubic

Strunz Class:

07.DE.55 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DE -With only medium-sized cations; unclassified

07.DE.55 Mcalpineite Cu3TeO6•(H2O) Unk Cubic

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Mcalpineite

Cu++3Te++++++O6•(H2O)
Dana No: 33.02.05.01 Strunz No: 07.DE.55
Locality:

Notes:

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