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Sieleckiite

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Mount Oxide Copper mine, Mount Gordon, Gunpowder District, Mt Isa - Cloncurry area, Queensland, Australia
© Brent Thorne

Show Sieleckiite Photos (4)
Formula:
Cu
 
3
Al
 
4
[(OH)
 
6
|PO
 
4
]
 
2
 · 2H
 
2
O
System:TriclinicColour:Blue
Hardness:3
Name:For Australian geologist, Robert Sielecki (b.1958), who found the mineral.
This page provides mineralogical data about Sieleckiite.

Classification of Sieleckiite

IMA status:Approved 1987
Strunz 8th edition ID:7/D.23-10
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:42.13.12.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous
Hey's CIM Ref.:19.2.9

19 : Phosphates
2 : Phosphates of Cu
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Type Occurrence of Sieleckiite

Type Locality:Mount Oxide Copper mine, Mount Gordon, Gunpowder District, Mt Isa - Cloncurry area, Queensland, Australia
Year of Discovery:1988

Physical Properties of Sieleckiite

Colour:Blue
Streak:Light blue
Hardness (Mohs):3

Crystallography of Sieleckiite

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

Optical Data of Sieleckiite

Type:Biaxial
RI values: nα = 1.630 nγ = 1.660
Maximum Birefringence:δ = 0.030

Chart 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 Sieleckiite

Formula:
Cu
 
3
Al
 
4
[(OH)
 
6
|PO
 
4
]
 
2
 · 2H
 
2
O
Essential elements:Al, Cu, H, O, P
All elements listed in formula:Al, Cu, H, O, P

Relationship of Sieleckiite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DF.05Hotsonite
Al
 
11
[(OH)
 
21
|(SO
 
4
)
 
3
|(PO
 
4
)
 
2
] · 16H
 
2
O
8.DF.10Bolivarite
Al
 
2
[(OH)
 
3
|PO
 
4
] · 4-5H
 
2
O
8.DF.10Evansite
Al
 
3
[(OH)
 
6
|PO
 
4
] · 6H
 
2
O
8.DF.10Liskeardite
(Al,Fe
3+
 
)
 
3
[(OH)
 
6
|AsO
 
4
] · 5H
 
2
O
8.DF.10Rosièresite
(Pb, Cu, Al, P, O, H)
8.DF.15Rusakovite
(Fe
3+
 
,Al)
 
5
[(OH)
 
9
|(VO
 
4
,PO
 
4
)
 
2
] · 3H
 
2
O
8.DF.20Liroconite
Cu
 
2
Al[(OH)
 
4
|AsO
 
4
] · 4H
 
2
O
8.DF.30Chalcophyllite
Cu
 
18
Al
 
2
[(OH)
 
9
|SO
 
4
|AsO
 
4
]
 
3
 · 33H
 
2
O
8.DF.35Parnauite
Cu
 
9
[(OH)
 
10
|SO
 
4
|(AsO
 
4
)
 
2
] · 7H
 
2
O
8.DF.40Gladiusite
Fe
 
2
(Fe,Mg)
 
4
(PO
 
4
)(OH)
 
11
(H
 
2
O)
Related Minerals - Hey's Index Grouping:

- +
19.2.1Libethenite
Cu
 
2
[OH|PO
 
4
]
19.2.2Cornetite
Cu
 
3
[(OH)
 
3
|PO
 
4
]
19.2.3Reichenbachite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
19.2.4Ludjibaite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
19.2.5Pseudomalachite
Cu
 
5
[(OH)
 
2
|PO
 
4
]
 
2
19.2.6Nissonite
Cu
 
2
Mg
 
2
[OH|PO
 
4
]
 
2
 · 5H
 
2
O
19.2.7Zapatalite
Cu
 
3
Al
 
4
[(OH)
 
3
|PO
 
4
]
 
3
 · 4H
 
2
O
19.2.8Turquoise
Cu(Al,Fe
3+
 
)
 
6
[(OH)
 
4
|(PO
 
4
)
 
2
]
 
2
 · 4H
 
2
O
19.2.10Planerite
Al
 
6
[(OH)
 
4
|HPO
 
4
|PO
 
4
]
 
2
 · 4 H
 
2
O
19.2.11Hentschelite
CuFe
3+
2
[OH|PO
 
4
]
 
2
19.2.13Chalcosiderite
Cu(Fe
3+
 
,Al)
 
6
[(OH)
 
4
|(PO
 
4
)
 
2
]
 
2
 · 4H
 
2
O
19.2.14Phosphofibrite
[K
 
<0.5
(H
 
2
O)
 
3
][(Fe
3+
 
,Cu)
 
8
(PO
 
4
)
 
6
(OH)
 
7
(H
 
2
O)
 
4
]

Other Names for Sieleckiite

Synonyms:
IMA1987-023
Other Languages:
German:Sieleckiit
Spanish:Sieleckiita

Other Information

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

References for Sieleckiite

Reference List:Mineralogical Magazine (1988): 52: 515-518.

American Mineralogist (1989): 74: 1401.

Internet Links for Sieleckiite

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  • Sieleckiite details from Handbook of Mineralogy (PDF)
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    Localities for Sieleckiite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • New South Wales
      • Canbelego Co.
        • Gidalambone
          • 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
      • Mt Isa - Cloncurry area
        • 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.
    Mineral and/or Locality
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