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 % Y2 O3
Copper 37.94 % Cu 47.49 % CuO
Arsenic 22.37 % As 34.31 % As2 O5
Hydrogen 1.30 % H 11.65 % H2 O
Oxygen 33.43 % O
______ ______
100.00 % 100.16 % = TOTAL OXIDE
Empirical Formula:
Ca0.8 Y0.2 Cu6 (AsO4 )2 (AsO3 OH)(OH)6 •3(H2 O)
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:
Images:
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
X Ray Diffraction:
By Intensity(I/Io ): 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:
PEZalesiite = 34.66 barns/electronU=PEZalesiite x r Electron 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 � 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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