General Lusungite Information![]() (Sr,Pb)Fe+++3(PO4)2(OH)5•(H2O) |
![]() Molecular Weight = 578.05 gm |
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Strontium 11.37 % Sr 13.44 % SrO |
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Iron 28.98 % Fe 41.44 % Fe2O3 |
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Phosphorus 10.72 % P 24.56 % P2O5 |
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Hydrogen 1.22 % H 10.91 % H2O |
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Lead 8.96 % Pb 10.35 % PbO2 |
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Oxygen 38.75 % O |
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100.00 % 100.69 % = TOTAL OXIDE |
![]() Sr0.75Pb0.25Fe3+3(PO4)2(OH)5•(H2O) |
![]() Found with iron oxyhydroxides ("limonite"). Discredited as being equal to benauite. |
![]() Discredited IMA 1983 - Valid Species (Pre-IMA) 1958 |
![]() Kookobo, Kivu, Zaire. Link to MinDat.org Location Data. |
![]() Named in 1958 for the Lusungu River, Zaire. |
![]() Discredited IMA 1995 |
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Lusungite Crystallography![]() a:c = 1:2.38636 |
![]() a = 7.04, c = 16.8, Z = 3; V = 721.08 Den(Calc)= 3.99 |
![]() Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m |
![]() By Intensity(I/Io): 2.98(1), 5.77(0.9), 3.53(0.6),2.48(0.4), 1.913(0.2), 2.22(0.2), 2.26(0.2), 2.2(0.1), |
| Physical Properties of Lusungite![]() Dark brown, Yellowish brown. |
![]() 4.06 |
![]() Translucent |
![]() Encrustations - Forms crust-like aggregates on matrix. |
![]() yellowish brown |
| Optical Properties of Lusungite![]() Uniaxial (?). |
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NCalc= 1.97 - from Gladstone-Dale relationship (KC = 0.2429) where Ncalc=Dcalc*KC+1 |
NCalc= 1.99 - from Gladstone-Dale relationship (KC = 0.2429) where Ncalc=Dmeas*KC+1 | Calculated Properties of Lusungite![]() Bulk Density (Electron Density)=3.81 gm/cc |
note: Specific Gravity of Lusungite =3.99 gm/cc. ![]() Fermion Index = 0.03 |
Boson Index = 0.97 ![]() PELusungite = 166.03 barns/electron |
U=PELusungite x rElectron Density= 632.61 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Lusungite is Not Radioactive | Lusungite Classification![]() 42.07.03.04 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.07)where (AB)5 (XO4)3 Zq · x(H2O) |
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(42.07.03)Crandallite Group |
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![]() 08.BL.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BL -With medium-sized and large cations, (OH, etc.):RO4 = 3:1 |
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| Other Lusungite Information![]() NAME( Dana8) |
![]() Links to other databases for Lusungite : |
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 11 - WWW-MINCRYST Search for Lusungite using: Visit our Advertisers for Lusungite : A Bijoux Google Search for LusungiteAdam's Minerals Google Search for Lusungite Cape Minerals Google Search for Lusungite Dakota Matrix Minerals Google Search for Lusungite Excalibur Mineral Corp. Google Search for Lusungite Exceptional Minerals Google Search for Lusungite John Betts Fine Minerals Search for Lusungite McDougall Minerals Google Search for Lusungite Mineral News Website Link Rock and Mineral Shows Google Search for Lusungite Weinrich Minerals, Inc. Google Search for Lusungite Ask about Lusungite here : Print or Cut-and-Paste your Lusungite Specimen Label here :
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