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Sieleckiite

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About SieleckiiteHide

Rob Sielecki
Formula:
Cu3Al4(PO4)2(OH)12 · 2H2O
Colour:
Blue
Hardness:
3
Crystal System:
Triclinic
Name:
For Australian geologist, Robert Sielecki (b.1958), who found the mineral.
This page provides mineralogical data about Sieleckiite.


Classification of SieleckiiteHide

Approved
Approval Year:
1987
8.DF.25

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
F : With only medium-sized cations, (OH,etc.):RO4 > 3:1
42.13.12.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous
19.2.9

19 : Phosphates
2 : Phosphates of Cu

Physical Properties of SieleckiiteHide

Colour:
Blue
Streak:
Light blue
Hardness:

Optical Data of SieleckiiteHide

Type:
Biaxial
RI values:
nα = 1.630 nγ = 1.660
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively strong

Chemical Properties of SieleckiiteHide

Formula:
Cu3Al4(PO4)2(OH)12 · 2H2O

Crystallography of SieleckiiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 9.41 Å, b = 7.56 Å, c = 5.95 Å
α = 90.25°, β = 91.27°, γ = 104.02°
Ratio:
a:b:c = 1.245 : 1 : 0.787
Unit Cell V:
410.55 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.120 (50)
5.036 (100)
3.852 (100)
3.276 (30)
2.827 (50)
2.570 (20)
2.460 (50)

Type Occurrence of SieleckiiteHide

Synonyms of SieleckiiteHide

Other Language Names for SieleckiiteHide

German:Sieleckiit
Spanish:Sieleckiita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Libethenite5 photos of Sieleckiite associated with Libethenite on mindat.org.
Turquoise2 photos of Sieleckiite associated with Turquoise on mindat.org.
Variscite1 photo of Sieleckiite associated with Variscite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DF.05HotsoniteAl11(SO4)3(PO4)2(OH)21 · 16H2OTric.
8.DF.10BolivariteAl2(PO4)(OH)3 · 4-5H2OAmor.
8.DF.10EvansiteAl3(PO4)(OH)6 · 6H2OAmor.
8.DF.10Liskeardite[(Al,Fe)32(AsO4)18(OH)42(H2O)22] · 52H2OOrth.
8.DF.10Rosièresite(Pb, Cu, Al, P, O, H)Amor.
8.DF.15Rusakovite(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
8.DF.20LiroconiteCu2Al(AsO4)(OH)4 · 4H2OMon. 2/m
8.DF.30ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2OTrig. 3 : R3
8.DF.35ParnauiteCu9(AsO4)2(SO4)(OH)10 · 7H2OOrth. mm2 : Pmn21
8.DF.40GladiusiteFe2(Fe,Mg)4(PO4)(OH)11(H2O)Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.2.1LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
19.2.2CornetiteCu3(PO4)(OH)3Orth. mmm (2/m 2/m 2/m) : Pbca
19.2.3ReichenbachiteCu5(PO4)2(OH)4Mon. 2/m
19.2.4LudjibaiteCu5(PO4)2(OH)4Tric. 1 : P1
19.2.5PseudomalachiteCu5(PO4)2(OH)4Mon. 2/m : P21/b
19.2.6NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon.
19.2.7ZapataliteCu3Al4(PO4)3(OH)9 · 4H2OTet.
19.2.8TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.2.10PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
19.2.11HentscheliteCuFe3+2(PO4)2(OH)2Mon.
19.2.13ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.2.14Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for SieleckiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mineralogical Magazine (1988): 52: 515-518.
American Mineralogist (1989): 74: 1401.

Internet Links for SieleckiiteHide

Localities for SieleckiiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Canbelego Co.
      • Girilambone
Chapman, J. R., Sharpe, J. L. and Williams, P. A. (2005): The copper deposits at Girilambone, New South Wales. Australian Journal of Mineralogy, 11, 91-99.
  • Queensland
    • Mount Isa City Shire
      • Gunpowder District
        • Mount Gordon
MM 1988, 515-8; Day, B. E. & Beyer, B. D. (1996): Some mines of the Mt Isa district. Part 3 - The Mt Oxide mine. Australian J. of Mineralogy 2 (1), 3-10.
UK
 
  • England
    • Cornwall
      • St Day
M Rumsey & G Cressey (2010) The first confirmed British occurrence of sieleckiite. Russell Soc Jnl v13
Mineral and/or Locality  
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