Zdenekite Mineral Data

General Zdenekite Information

Chemical Formula:

NaPbCu++5(AsO4)4Cl•5(H2O)

Composition:

Molecular Weight = 1,229.13 gm

Sodium 1.87 % Na 2.52 % Na₂O

Copper 25.85 % Cu 32.36 % CuO

Arsenic 24.38 % As 37.40 % As₂O₅

Hydrogen 0.82 % H 7.33 % H₂O

Lead 16.86 % Pb 18.16 % PbO

Chlorine 2.88 % Cl 2.88 % Cl

- % Cl -0.65 % -O=Cl₂

Oxygen 27.34 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaPbCu₅(AsO₄)₄Cl•5(H₂O)

Environment:

In a tennantite-bearing horizon near the contact with a lead-bearing horizon in pillars 78, 78b, and 80 in the northern part of the mine.

IMA Status:

Approved IMA 1995

Locality:

The Cap Garonne mine, near Le Pradet, 12 km east of Toulon, Var, France. Link to MinDat.org Location Data.

Name Origin:

For Dr. Johan Zdenek (1935-), mineralogist and Director of Scientific Affairs of the Bureau de Recherches Geologiques et Minieres, France.

Name Pronunciation:

Zdenekite + Pronunciation

Synonym:

IMA1992-037

Zdenekite Image

Images:

Zdenekite

Comments: Blue crystals of zdenekite on matrix.
Location: Cap Garonne Mine, Pradet, Var, Provence-Alpes-CÃ´te d'Azur, France. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Zdenekite Crystallography

Axial Ratios:

a:c = 1:3.91317

Cell Dimensions:

a = 10.066, c = 39.39, Z = 8; V = 3,991.17 Den(Calc)= 4.09

Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 4₁22,P 4₃22

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

By Intensity(I/I_o): 9.83(1), 3.132(0.9), 4.925(0.6),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Zubkova N V , Pushcharovsky D Y , Sarp H , Teat S J , MacLean E J , Crystallography Reports , 48 (2003) p.939-943, Crystal structure of zdenekite NaPbCu5(AsO4)4Cl*5H2O, Locality: Cap Garrone copper-lead mine, France

Physical Properties of Zdenekite

Cleavage:

{001} Perfect

Color:

Blue, Turquoise.

Density:

4.1

Diaphaneity:

Translucent

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

pale blue

Optical Properties of Zdenekite

Dichroism (e):

turquoise blue or turquoise blue.

Dichroism (w):

pale blue or light green.

Gladstone-Dale:

CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1809,KPDmeas= 0.1805,KC= 0.1786
Ncalc = 1.73

Optical Data:

Uniaxial (-), e=1.71, w=1.77, bire=0.0600.

Calculated Properties of Zdenekite

Electron Density:

Bulk Density (Electron Density)=3.77 gm/cc
note: Specific Gravity of Zdenekite =4.10 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Zdenekite= 310.74 barns/electron
U=PE_Zdenekite x rElectron Density=1,171.28 barns/cc.

Radioactivity:

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

Zdenekite Classification

Dana Class:

42.09.04.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.09)where (A)3 (XO4)2 Zq · x(H2O)

(42.09.04)Dana Group

42.09.04.01 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m

42.09.04.02 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho

42.09.04.03 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4₁22,P 4₃22 4 2 2

42.09.04.04 Mahnertite! (Na,Ca)Cu3(AsO4)2Cl•5(H2O) I 4mmm 4 2 2

42.09.04.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4₁22 or P 4₃22 4 2 2

Strunz Class:

08.DG.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DG -With large and medium-sized cations, (OH, etc.):RO4 < 0.5:1

08.DG.05 Lavendulan NaCaCu5(AsO4)4Cl•5(H2O) Unk Ortho

08.DG.05 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) Unk Ortho

08.DG.05 Sampleite NaCaCu5(PO4)4Cl•5(H2O) pseudo TET 2/m 2/m 2/m

08.DG.05 Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho

08.DG.05 Lemanskiite! NaCaCu5(AsO4)4Cl•5H2O P 4₁22 or P 4₃22 4 2 2

08.DG.05 Zdenekite NaPbCu5(AsO4)4Cl•5(H2O) P 4₁22,P 4₃22 4 2 2

Other Zdenekite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Zdenekite :
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

Search for Zdenekite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Zdenekite :

A Bijoux Google Search for Zdenekite
Adam's Minerals Google Search for Zdenekite
Cape Minerals Google Search for Zdenekite
Dakota Matrix Minerals Google Search for Zdenekite
Excalibur Mineral Corp. Google Search for Zdenekite
Exceptional Minerals Google Search for Zdenekite
John Betts Fine Minerals Search for Zdenekite
McDougall Minerals Google Search for Zdenekite
Mineral News Website Link
Rock and Mineral Shows Google Search for Zdenekite
Weinrich Minerals, Inc. Google Search for Zdenekite

Ask about Zdenekite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Zdenekite

NaPbCu++5(AsO4)4Cl•5(H2O)
Dana No: 42.09.04.03 Strunz No: 08.DG.05
Locality:

Notes: