Lemanskiite Mineral Data

Lemanskiite Mineral Data

General Lemanskiite Information

Chemical Formula:

NaCaCu5(AsO4)4Cl·5(H2O)

Composition:

Molecular Weight = 1,062.00 gm

Sodium 2.16 % Na 2.92 % Na₂O

Calcium 3.77 % Ca 5.28 % CaO

Copper 29.92 % Cu 37.45 % CuO

Arsenic 28.22 % As 43.28 % As₂O₅

Hydrogen 0.95 % H 8.48 % H₂O

Chlorine 3.34 % Cl 3.34 % Cl

- % Cl -0.75 % -O=Cl₂

Oxygen 31.64 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaCaCu₅(AsO₄)₄Cl·5(H₂O)

Environment:

Ca-analog of zdenekite, dimorphous with lavendulan.

IMA Status:

Proposed IMA 2001 (Dana # Added)

Locality:

El Guanaco Mine, near Taltal, Chile. Link to MinDat.org Location Data.

Name Origin:

Named for Chester (Chet) S. Lemanski, Jr.

Synonym:

IMA1999-037

Lemanskiite Image

Images:

Lemanskiite

Comments: Electric blue lemanskiite sprays on matrix.
Location: Abundancia Mine, Guanaco, Chile. Scale: Picture size 1.2 cm.
© John Veevaert

Lemanskiite Crystallography

Axial Ratios:

a:c = 1:3.66543

Cell Dimensions:

a = 10.01, c = 36.691, V = 3,676.44

Crystal System:

TetragonalSpace Group: P 4₁22 or P 4₃22

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

By Intensity(I/I_o): 9.18(1), 4.59(0.4), 3.06(0.18),4.17(0.11), 2.61(0.06),

Physical Properties of Lemanskiite

Color:

Dark blue.

Diaphaniety:

Translucent

Luster:

Vitreous (Glassy)

Optical Properties of Lemanskiite

Optical Data:

Uniaxial (-), e=1.647, w=1.749, bire=0.1020.

Calculated Properties of Lemanskiite

Fermion Index

Fermion Index = 0.0002
Boson Index = 0.9998

Photoelectric:

PE_Lemanskiite= 33.35 barns/electron
U=PE_Lemanskiite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lemanskiite is Not Radioactive

Lemanskiite Classification

Dana Class:

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

(42.9)where (A)3 (XO4)2 Zq · x(H2O)

(42.9.4)Dana Group

42.9.4.1 Sampleite NaCaCu5(PO4)4Cl·5(H2O) pseudo TET 2/m 2/m 2/m

42.9.4.2 Lavendulan NaCaCu5(AsO4)4Cl·5(H2O) Unk Ortho

42.9.4.3 Zdenekite NaPbCu5(AsO4)4Cl·5(H2O) P 4₁22,P 4₃22 4 2 2

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

42.9.4.5 Lemanskiite ! NaCaCu5(AsO4)4Cl·5(H2O) P 4₁22 or P 4₃22 Tetra

Strunz Class:

VII/D.25-24 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.25 - Lavendulan series

VII/D.25-10 Sampleite NaCaCu5(PO4)4Cl·5(H2O) pseudo TET 2/m 2/m 2/m

VII/D.25-20 Lavendulan NaCaCu5(AsO4)4Cl·5(H2O) Unk Ortho

VII/D.25-22 Zinclavendulan* NaCa(Zn,Cu)5(AsO4)4Cl·4-5(H2O) Unk Ortho

VII/D.25-24 Lemanskiite NaCaCu5(AsO4)4Cl·5(H2O) P 4₁22 or P 4₃22 Tetra

VII/D.25-25 Zdenekite NaPbCu5(AsO4)4Cl·5(H2O) P 4₁22,P 4₃22 4 2 2

VII/D.25-27 Mahnertite! (Na,Ca)Cu3(AsO4)2Cl·5(H2O) I 4mmm 4 2 2

VII/D.25-30 Shubnikovite Ca2Cu8(AsO4)6Cl(OH)·7(H2O)(?) Unk Ortho

VII/D.25-33 Goldquarryite! (Cu,[])(Cd,Ca)2Al3(PO4)4F2(H2O)10{(H2O,F)}2 P1 1

VII/D.25-35 Andyrobertsite! KCdCu5(AsO4)4[As(OH)2O2]·2(H2O) P 2₁/m 2/m

VII/D.25-36 Calcio-andyrobertsite-1M! KCaCu5(AsO4)4[As(OH)2O2]·2(H2O) P 2₁/m 2/m

VII/D.25-36* Calcio-andyrobertsite-2O! KCaCu5(AsO4)4[As(OH)2O2]·2(H2O) P nma 2/m 2/m 2/m

VII/D.25-38 Esperanzaite! NaCa2Al2(AsO4)2F4(OH)·2(H2O) P 2₁/m 2/m

VII/D.25-40 Englishite K3Na2Ca10Al15(PO4)21(OH)7·26(H2O) A2 or Aa 2

Other Lemanskiite Information

See Also:

Links to other databases for Lemanskiite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Lemanskiite

NaCaCu5(AsO4)4Cl·5(H2O)
Dana No: 42.9.4.5 Strunz No: VII/D.25-24
Locality:

Notes: