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Sieleckiite Mineral Data

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General Sieleckiite Information

Help on Chemical  Formula: Chemical Formula: Cu3Al4(PO4)2(OH)12•2(H2O)
Help on Composition: Composition: Molecular Weight = 728.63 gm
   Aluminum    14.81 %  Al   27.99 % Al2O3
   Copper      26.16 %  Cu   32.75 % CuO
   Phosphorus   8.50 %  P    19.48 % P2O5
   Hydrogen     2.21 %  H    19.78 % H2O
   Oxygen      48.31 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3Al4(PO4)2(OH)12•2(H2O)
Help on Environment: Environment: Oxidation zone of massive pyrite enriched with Cu.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Mt. Oxide Cu mine, 150 km N of Mt. Isa, Queensland, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert Sielecki (1958-), Australian geologist.
Help on Name Pronunciation: Name Pronunciation: Sieleckiite + Pronunciation Say SIELECKIITE

Sieleckiite Image

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Comments: SEM image showing a hemisphere of sieleckiite on variscite crystals. (MinMag, 52:515).
Location: Mt Oxide Copper Mine, 150 km north of Mt Isa, Queensland, Australia. Scale: Sphere Diameter 0.4 mm.
© Mineralogical Magazine

Sieleckiite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2447:1:0.787
Help on Cell Dimensions: Cell Dimensions: a = 9.41, b = 7.56, c = 5.95, Z = 1; alpha = 90.25°, beta = 91.27°, gamma = 104.02° V = 410.57 Den(Calc)= 2.95
Help on Crystal System: Crystal System: Triclinic Space Group: P1 or P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.852(1), 5.036(1), 9.12(1),

Physical Properties of Sieleckiite

Help on Cleavage: Cleavage: None
Help on Color: Color: Sky blue, Royal blue.
Help on Density: Density: 3.02
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Pearly
Help on Streak: Streak: light blue

Optical Properties of Sieleckiite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2186,KPDmeas= 0.2136,KC= 0.2165
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (?), a=1.63, g=1.66, bire=0.0300
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): pale blue.
Help on Pleochroism (z): Pleochroism (z): pale blue.

Calculated Properties of Sieleckiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Sieleckiite =2.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002352
Boson Index = 0.9997648
Help on Photoelectric: Photoelectric: PESieleckiite = 12.02 barns/electron
U=PESieleckiite x rElectron Density= 35.15 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sieleckiite is Not Radioactive

Sieleckiite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.13)Dana Type
  (42.13.12)Dana Group Sieleckiite Cu3Al4(PO4)2(OH)12•2(H2O) P1 or P1 Tri
Help on  Strunz Class: Strunz Class: 08.DF.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1
08.DF.25 Sieleckiite Cu3Al4(PO4)2(OH)12•2(H2O) P1 or P1 Tri

Other Sieleckiite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Sieleckiite :
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

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Dana No: Strunz No: 08.DF.25





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