General Zinclipscombite Information Chemical Formula: |
ZnFe+++2(PO4)2(OH) |
Composition: |
Molecular Weight = 386.04 gm |
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Calcium 0.21 % Ca 0.29 % CaO |
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Aluminum 2.52 % Al 4.75 % Al2O3 |
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Zinc 12.87 % Zn 16.02 % ZnO |
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Iron 24.88 % Fe 35.58 % Fe2O3 |
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Arsenic 2.72 % As 4.17 % As2O5 |
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Phosphorus 14.92 % P 34.20 % P2O5 |
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Hydrogen 0.56 % H 4.99 % H2O |
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Oxygen 41.32 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Zn0.76Ca0.02Fe3+1.72Al0.36(PO4)1.86(AsO4)0.14(OH)1.8(H2O)0.17 |
Environment: |
Lipscombite group |
IMA Status: |
Approved IMA 2006 (Dana # Added) |
Locality: |
Silver Coin mine, Valmy, Edna Mountains, Humboldt Co., Nevada, USA Link to MinDat.org Location Data. |
Name Origin: |
Named as the Zn analogue of lipscombite (Fe) |
Synonym: |
iMA2006-008 |
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Images:
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| | Zinclipscombite Crystallography Axial Ratios: |
a:c = 1:1.81234 |
Cell Dimensions: |
a = 7.242, c = 13.125, Z = 4; V = 688.36 Den(Calc)= 3.72 |
Crystal System: |
Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 43212 or P 41212 |
X Ray Diffraction: |
By Intensity(I/Io): 3.326(1), 4.79(0.8), 3.21(0.6),1.605(0.5), 1.663(0.45), 2.602(0.45), 2.049(0.4), 2.299(0.4), |
| Physical Properties of Zinclipscombite Cleavage: |
None |
Color: |
Dark green, Brown. |
Density: |
3.65 |
Diaphaneity: |
Translucent |
Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Habit: |
Fibrous - Crystals made up of fibers. |
Habit: |
Spherical - Spherical, rounded aggregates. |
Hardness: |
5 - Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
light greenish tan |
| Optical Properties of Zinclipscombite Gladstone-Dale: |
CI meas= 0.093 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.11 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2083,KPDmeas= 0.2123,KC= 0.2341 Ncalc = 1.85 - 1.87 Optical Data: |
Uniaxial (+), w=1.755, e=1.795, bire=0.0400. |
| Calculated Properties of Zinclipscombite Electron Density: |
Bulk Density (Electron Density)=3.54 gm/cc |
note: Specific Gravity of Zinclipscombite =3.65 gm/cc. Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEZinclipscombite = 16.48 barns/electron |
U=PEZinclipscombite x rElectron Density= 58.29 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Zinclipscombite is Not Radioactive | Zinclipscombite Classification Dana Class: |
41.10.02.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.10)where (A++ B++)3 (XO4)2 Zq |
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(41.10.02)Lipscombite Group |
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Strunz Class: |
08.BB.90 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1 |
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| Other Zinclipscombite Information References: |
NAME( Geology of Ore Deposits, v49:509) PHYS. PROP.(Geology of Ore Deposits, v49:509) OPTIC PROP.(Geology of Ore Deposits, v49:509) |
See Also: |
Links to other databases for Zinclipscombite : |
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 Search for Zinclipscombite using: Visit our Advertisers for Zinclipscombite : A Bijoux Google Search for ZinclipscombiteAdam's Minerals Google Search for Zinclipscombite Cape Minerals Google Search for Zinclipscombite Dakota Matrix Minerals Google Search for Zinclipscombite Excalibur Mineral Corp. Google Search for Zinclipscombite Exceptional Minerals Google Search for Zinclipscombite John Betts Fine Minerals Search for Zinclipscombite McDougall Minerals Google Search for Zinclipscombite Mineral News Website Link Rock and Mineral Shows Google Search for Zinclipscombite Weinrich Minerals, Inc. Google Search for Zinclipscombite Ask about Zinclipscombite here : Print or Cut-and-Paste your Zinclipscombite Specimen Label here :
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