Parakhinite Mineral Data

General Parakhinite Information

Chemical Formula:

Cu++3PbTe++++++O4(OH)6

Composition:

Molecular Weight = 691.48 gm

Copper 27.57 % Cu 34.51 % CuO

Tellurium 18.45 % Te 23.08 % TeO₂

Hydrogen 0.87 % H 7.82 % H₂O

Lead 29.96 % Pb 32.28 % PbO

Oxygen 23.14 % O

______ ______

100.00 % 97.69 % = TOTAL OXIDE

Empirical Formula:

Cu₃PbTeO₄(OH)₆

IMA Status:

Approved IMA 1978

Locality:

Emerald mine, Tombstone, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named in allusion to its dimorphous relationship to khinite.

Name Pronunciation:

Parakhinite + Pronunciation

Synonym:

ICSD 81604

PDF 29-1420

Parakhinite Image

Images:

Parakhinite

Comments: Dark emerald-green hexagonal prismatic parakhinite crystals on matrix.
Location: 400 ft. level, Empire mine, Tombstone, Arizona. Scale: See Image.
© Rruff Database

Parakhinite Crystallography

Axial Ratios:

a:c = 1:3.1215

Cell Dimensions:

a = 5.753, c = 17.958, Z = 3; V = 514.73 Den(Calc)= 6.69

Crystal System:

Hexagonal - Trapezohedral H-M Symbol (6 2 2) Space Group: P 6₂22 or P 6₄22

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

By Intensity(I/I_o): 2.49(1), 3.336(1), 4.8(0.8),

Physical Properties of Parakhinite

Color:

Dark green.

Density:

6.5 - 6.7, Average = 6.6

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3.5 - Copper Penny

Streak:

green

Optical Properties of Parakhinite

Gladstone-Dale:

CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.17,KPDmeas= 0.1723,KC= 0.1746
Ncalc = 2.13 - 2.17

Optical Data:

Uniaxial (-), e=2.12, w=2.155, bire=0.0350.

Calculated Properties of Parakhinite

Electron Density:

Bulk Density (Electron Density)=5.86 gm/cc
note: Specific Gravity of Parakhinite =6.60 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Parakhinite= 594.91 barns/electron
U=PE_Parakhinite x rElectron Density=3,486.43 barns/cc.

Radioactivity:

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

Parakhinite Classification

Dana Class:

33.02.04.01 (33)Selenates and Tellurates

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

(33.02.04)Dana Group

33.02.04.01 Parakhinite Cu3PbTeO4(OH)6 P 6₂22 or P 6₄22 6 2 2

Strunz Class:

04.FD.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FD -Hydroxides with OH, without H2O; chains of edge-sharing octahedra

04.FD.30 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m

04.FD.30 Parakhinite Cu3PbTeO4(OH)6 P 6₂22 or P 6₄22 6 2 2

Other Parakhinite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Parakhinite :
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
15 - WWW-MINCRYST

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

Parakhinite

Cu++3PbTe++++++O4(OH)6
Dana No: 33.02.04.01 Strunz No: 04.FD.30
Locality:

Notes:

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