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Kunatite Mineral Data
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General Kunatite Information
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Chemical Formula: |
CuFe+++2(PO4)2(OH)2•4H2O |
Composition: |
Molecular Weight = 454.25 gm |
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Iron 24.59 % Fe 35.16 % Fe2O3 |
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Copper 13.99 % Cu 15.75 % Cu2O |
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Phosphorus 13.64 % P 31.25 % P2O5 |
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Hydrogen 2.00 % H 17.85 % H2O |
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Oxygen 45.79 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CuFe3+2(PO4)2(OH)•4(H2O) |
Environment: |
Whitmoreite group |
IMA Status: |
Proposed IMA 2007 |
Locality: |
Granite quarry 10 km SSW of the township of Lake Boga, northwestern Victoria, Australia Link to MinDat.org Location Data. |
Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
Synonym: |
IMA2007-057 |
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Kunatite Crystallography
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Axial Ratios: |
a:b:c =1.0209:1:0.5668 |
Cell Dimensions: |
a = 9.863, b = 9.661, c = 5.476, Z = 2; beta = 92.45° V = 521.31 Den(Calc)= 2.89 |
Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c |
X Ray Diffraction: |
By Intensity(I/Io): 9.849(1), 4.386(0.9), 4.924(0.8),6.892(0.8), 2.697(0.6), 4.333(0.45), 4.225(0.35), 2.654(0.31), |
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Optical Properties of Kunatite
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Optical Data: |
NCalc= 1.77 - from Gladstone-Dale relationship (KC = 0.2655) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Kunatite
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Electron Density: |
Bulk Density (Electron Density)=2.85 gm/cc note: Specific Gravity of Kunatite =2.89 gm/cc. |
Fermion Index: |
Fermion Index = 0.0054355605 Boson Index = 0.9945644395 |
Photoelectric: |
PEKunatite = 13.94 barns/electron U=PEKunatite x rElectron Density= 39.73 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kunatite is Not Radioactive |
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Kunatite Classification
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Dana Class: |
42.11.18.07 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.11)where (AB)4 (XO4)3 Zq � x(H2O) |
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(42.11.18)Whitmoreite Group |
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42.11.18.01 Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m |
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42.11.18.02 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m |
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42.11.18.03 Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m |
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42.11.18.04 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m |
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42.11.18.05 Gladiusite! Fe2(Fe,Mg)4(PO4)(OH)13•H2O P 21/n 2/m |
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42.11.18.06 Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m |
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42.11.18.07 Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m |
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42.11.18.08 Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m |
Strunz Class: |
08.DC.15 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1 |
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08.DC.15 Earlshannonite (Mn,Fe)Fe2(PO4)2(OH)2•4(H2O) P 21/c 2/m |
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08.DC.15 Arthurite CuFe2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) P 21/c 2/m |
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08.DC.15 Ojuelaite ZnFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m |
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08.DC.15 Whitmoreite FeFe2(PO4)2(OH)2•4(H2O) P 21/c 2/m |
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08.DC.15 Cobaltarthurite! CoFe2(AsO4)2(OH)2•4(H2O) P 21/c 2/m |
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08.DC.15 Kunatite CuFe2(PO4)2(OH)2•4H2O P 21/c 2/m |
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08.DC.15 Bendadaite! FeFe2(AsO4)2(OH)2•4H2O P 21/c 2/m |
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Other Kunatite Information
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See Also: |
Links to other databases for Kunatite :
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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Print or Cut-and-Paste your Kunatite Specimen Label here :
Kunatite
CuFe+++2(PO4)2(OH)2•4H2O
Dana No: 42.11.18.07 Strunz No: 08.DC.15
Locality:
Notes:
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