Cloncurryite Mineral Data

General Cloncurryite Information

Chemical Formula:

[Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O)

Composition:

Molecular Weight = 372.48 gm

Aluminum 14.49 % Al 27.37 % Al₂O₃

Vanadium 6.02 % V 8.85 % V₂O₃

Copper 9.55 % Cu 11.96 % CuO

Phosphorus 16.63 % P 38.11 % P₂O₅

Hydrogen 1.42 % H 12.70 % H₂O

Oxygen 48.06 % O

Fluorine 3.83 % F 3.83 % F

- % F -1.61 % -O=F₂

______ ______

100.00 % 101.20 % = TOTAL OXIDE

Empirical Formula:

Cu_0.56(V³⁺)_0.44O_0.44Al₂(PO₄)₂F_0.75(OH)_0.25ï¿½2.5(H₂O)

Environment:

Found in a ferruginous, silicified gossan matrix. New structure type

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Great Australia deposit, Cloncurry, Queensland, Australia Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2005-060

Cloncurryite Crystallography

Axial Ratios:

a:b:c =0.4069:1:1.5575

Cell Dimensions:

a = 4.9573, b = 12.1824, c = 18.9749, Z = 4; beta = 90.933° V = 1,145.78 Den(Calc)= 2.16

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 6.101(1), 5.621(0.91), 9.515(0.67),3.338(0.21), 3.976(0.21), 3.163(0.17), 4.753(0.17), 3.047(0.13),

Physical Properties of Cloncurryite

Cleavage:

None

Color:

Pale sky blue.

Diaphaneity:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Cloncurryite

Gladstone-Dale:

CI calc= -0.175 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2542,KC= 0.2164
Ncalc = 1.47

Optical Data:

Biaxial (-), a=1.548, b=1.55,

Calculated Properties of Cloncurryite

Electron Density:

Bulk Density (Electron Density)=2.13 gm/cc
note: Specific Gravity of Cloncurryite =2.16 gm/cc.

Fermion Index:

Fermion Index = 0.0003832788
Boson Index = 0.9996167212

Photoelectric:

PE_Cloncurryite= 6.46 barns/electron
U=PE_Cloncurryite x rElectron Density= 13.78 barns/cc.

Radioactivity:

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

Cloncurryite Classification

Dana Class:

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

(42.06)where (AB)2 (XO4) Zq ï¿½ x(H2O)

(42.06.13)Nevadaite Group

42.06.13.01 Nevadaite! (Cu,[],Al,V)6[Al8(PO4)8F8](H2O)23 P 2₁mn 2 2 2

42.06.13.02 Cloncurryite! [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O) P 2₁/c 2/m

Strunz Class:

08.DC.60 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1

08.DC.60 Nevadaite! (Cu,[],Al,V)6[Al8(PO4)8F8](H2O)23 P 2₁mn 2 2 2

08.DC.60 Cloncurryite! [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O) P 2₁/c 2/m

Other Cloncurryite Information

References:

NAME( Australian Journal of Mineralogy, v5:5-13) PHYS. PROP.(Australian Journal of Mineralogy, v5:5-13) OPTIC PROP.(Australian Journal of Mineralogy, v5:5-13)

See Also:

Links to other databases for Cloncurryite :
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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Cloncurryite

[Cu0.56(VO)0.44]Al2(PO4)2(F,OH)•2.5H2O)
Dana No: 42.06.13.02 Strunz No: 08.DC.60
Locality:

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