General Kovdorskite Information Chemical Formula: |
Mg5(PO4)2(CO3)(OH)2•4.5(H2O) |
Composition: |
Molecular Weight = 486.56 gm |
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Magnesium 24.98 % Mg 41.42 % MgO |
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Phosphorus 12.73 % P 29.17 % P2O5 |
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Hydrogen 2.28 % H 20.36 % H2O |
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Carbon 2.47 % C 9.05 % CO2 |
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Oxygen 57.54 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Mg5(PO4)2(CO3)(OH)2•4.5(H2O) |
Environment: |
Found in magnetite-forsterite rocks. |
IMA Status: |
Approved IMA 1980 |
Locality: |
Kovdor massif, Kola Pneinsula, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Name Pronunciation: |
Kovdorskite + Pronunciation |
Synonym: |
ICSD 20796 |
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PDF 45-1380 |
| | Kovdorskite Image
Images:
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Kovdorskite Crystallography Axial Ratios: |
a:b:c =0.3674:1:0.8023 |
Cell Dimensions: |
a = 4.74, b = 12.9, c = 10.35, Z = 2; beta = 102° V = 619.03 Den(Calc)= 2.61 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c |
X Ray Diffraction: |
By Intensity(I/Io): 7.96(1), 2.258(0.64), 2.821(0.59), |
Crystal Structure:
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Mouse
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| Physical Properties of Kovdorskite Cleavage: |
None |
Color: |
Colorless, Greenish blue, Light pink, Pink. |
Density: |
2.6 |
Fracture: |
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments. |
Hardness: |
4 - Fluorite |
Streak: |
white |
| Optical Properties of Kovdorskite Gladstone-Dale: |
CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.08 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2066,KPDmeas= 0.2074,KC= 0.2245 Ncalc = 1.58 - 1.59 Optical Data: |
Biaxial (-), a=1.527, b=1.542, g=1.549, bire=0.0220, 2V(Calc)=68, 2V(Meas)=80. Dispersion r > v very weak. |
| Calculated Properties of Kovdorskite Electron Density: |
Bulk Density (Electron Density)=2.64 gm/cc |
note: Specific Gravity of Kovdorskite =2.60 gm/cc. Fermion Index: |
Fermion Index = 0.02 |
Boson Index = 0.98 Photoelectric: |
PEKovdorskite = 1.24 barns/electron |
U=PEKovdorskite x rElectron Density= 3.28 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Kovdorskite is Not Radioactive | Kovdorskite Classification Dana Class: |
43.05.08.01 (43)Compound Phosphates, etc. |
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(43.05)(Hydrated Compound Anions With Hydroxyl or Halogen) |
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(43.05.08)Dana Group |
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Strunz Class: |
08.DC.22 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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| Other Kovdorskite Information References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Kovdorskite : |
1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - WWW-MINCRYST Search for Kovdorskite using: Visit our Advertisers for Kovdorskite : A Bijoux Google Search for KovdorskiteAdam's Minerals Google Search for Kovdorskite Cape Minerals Google Search for Kovdorskite Dakota Matrix Minerals Google Search for Kovdorskite Excalibur Mineral Corp. Google Search for Kovdorskite Exceptional Minerals Google Search for Kovdorskite John Betts Fine Minerals Search for Kovdorskite McDougall Minerals Google Search for Kovdorskite Mineral News Website Link Rock and Mineral Shows Google Search for Kovdorskite Weinrich Minerals, Inc. Google Search for Kovdorskite Ask about Kovdorskite here : Print or Cut-and-Paste your Kovdorskite Specimen Label here :
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