Zalesiite Mineral Data

General Zalesiite Information

Chemical Formula:

(Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O)

Composition:

Molecular Weight = 1,004.97 gm

Calcium 3.19 % Ca 4.46 % CaO

Yttrium 1.77 % Y 2.25 % Y₂O₃

Copper 37.94 % Cu 47.49 % CuO

Arsenic 22.37 % As 34.31 % As₂O₅

Hydrogen 1.30 % H 11.65 % H₂O

Oxygen 33.43 % O

______ ______

100.00 % 100.16 % = TOTAL OXIDE

Empirical Formula:

Ca_0.8Y_0.2Cu₆(AsO₄)₂(AsO₃OH)(OH)₆•3(H₂O)

Environment:

Oxidation product of chalcopyrite The calcium and arsenate dominant member of the mixite group.

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

Zalesi (formerly Valdek) uranium deposit near Javornik, northern Moravia, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA1997-009

Zalesiite Image

Images:

Zalesiite

Comments: Green crusts of zÃ¡lesÃite on matrix.
Location: ZÃ¡lesÃ deposit, JavornÃk, Moravia, Czech Republic. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Zalesiite

Comments: Light blue acicular sprays of zalesiite to 0.75mm.
Location: Gold Hill mine, Tooele Co., Utah, USA. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Zalesiite Crystallography

Axial Ratios:

a:c = 1:0.43327

Cell Dimensions:

a = 13.571, c = 5.88, Z = 2; V = 937.85 Den(Calc)= 3.56

Crystal System:

Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 11.64(1), 2.9347(0.42), 4.431(0.41),

Physical Properties of Zalesiite

Color:

Pale green.

Density:

3.49

Diaphaneity:

Transparent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Powdery - Forms a loose, poorly-coherent pulverulent mass.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous - Resinous

Streak:

white

Optical Properties of Zalesiite

Gladstone-Dale:

CI meas= -0.101 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.079 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2041,KPDmeas= 0.2082,KC= 0.1891
Ncalc = 1.66 - 1.67

Optical Data:

Uniaxial (+), w=1.688, e=1.765, bire=0.0770.

Calculated Properties of Zalesiite

Electron Density:

Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Zalesiite =3.56 gm/cc.

Fermion Index:

Fermion Index = 0.0002055013
Boson Index = 0.9997944987

Photoelectric:

PE_Zalesiite= 34.66 barns/electron
U=PE_Zalesiite x rElectron Density= 117.31 barns/cc.

Radioactivity:

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

Zalesiite Classification

Dana Class:

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

(42.05)where (A)2 (XO4) Zq ï¿½ x(H2O)

(42.05.01)Mixite group (Arsenate Series)

42.05.01.01 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02a Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.02b Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02c Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02d Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m

42.05.01.02e Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.01.03 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex

42.05.01.04 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

42.05.01.06 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

Strunz Class:

08.DL.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1

08.DL.15 Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex

08.DL.15 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Calciopetersite! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

Other Zalesiite Information

References:

NAME( AmMin, vol 85, p 1564) PHYS. PROP.(AmMin, vol 85, p 1564) OPTIC PROP.(AmMin, vol 85, p 1564)

See Also:

Links to other databases for Zalesiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Zalesiite

(Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O)
Dana No: 42.05.01.04 Strunz No: 08.DL.15
Locality:

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