General Dewindtite Information![]() Pb3[H(UO2)3O2(PO4)2]2•12(H2O) |
![]() Molecular Weight = 2,903.85 gm |
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Uranium 49.18 % U 55.79 % UO2 |
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Phosphorus 4.27 % P 9.78 % P2O5 |
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Hydrogen 0.90 % H 8.07 % H2O |
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Lead 21.41 % Pb 23.06 % PbO |
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Oxygen 24.24 % O |
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100.00 % 96.69 % = TOTAL OXIDE |
![]() Pb3H2(UO2)6O4(PO4)4•12(H2O) |
![]() Rare secondary mineral formed by alteration of uraninite or earlier U-bearing minerals. |
![]() Valid Species (Pre-IMA) 1922 |
![]() Kasolo and Swambo, (Shinkolobwe), Katanga (Shaba) Province, Congo (Zaire). Link to MinDat.org Location Data. |
![]() Named for Jean Dewindt, Belgian geologist. |
![]() Dewindtite + Pronunciation |
![]() ![]() ICSD 69399 |
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PDF 39-1350 |
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Dewindtite Crystallography![]() a:b:c =0.9285:1:0.788 |
![]() a = 16.031, b = 17.264, c = 13.605, Z = 4; V = 3,765.31 Den(Calc)= 5.12 |
![]() Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bmmb |
![]() By Intensity(I/Io): 5.89(1), 8.01(1), 3.14(0.9), |
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| Physical Properties of Dewindtite![]() {100} Perfect |
![]() Greenish yellow, Yellow, Light yellow. |
![]() 5.03 |
![]() Translucent |
![]() Brittle - Generally displayed by glasses and most non-metallic minerals. |
![]() Pulverulent - Forms a loose, poorly-coherent powdery mass. |
![]() Striated - Parallel lines on crystal surface or cleavage face. |
![]() Tabular - Form dimensions are thin in one direction. |
![]() 2.5-3 - Finger Nail-Calcite |
![]() Fluorescent, Short UV=green, Long UV=green. |
![]() light yellow |
| Optical Properties of Dewindtite![]() CI meas= -0.155 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.135 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1496,KPDmeas= 0.1523,KC= 0.1318 Ncalc = 1.66 - 1.67 ![]() Biaxial (-), a=1.76-1.762, b=1.767-1.768, g=1.768-1.77, bire=0.0080, 2V(Calc)=40-58, 2V(Meas)=large. |
![]() colorless. |
![]() golden yellow. |
![]() golden yellow. |
| Calculated Properties of Dewindtite![]() Bulk Density (Electron Density)=4.36 gm/cc |
note: Specific Gravity of Dewindtite =5.12 gm/cc. ![]() Fermion Index = 0.05 |
Boson Index = 0.95 ![]() PEDewindtite =1,697.01 barns/electron |
U=PEDewindtite x relectron=7,396.56 barns/cc. ![]() |
GRapi = 3,568,742.73 (Gamma Ray American Petroleum Institute Units)
Dewindtite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 10 cm box)
8.52 ± 2.13 grams of pure Dewindtite .
Weight of pure Dewindtite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.12 gm/cc.* | Dewindtite Classification![]() 42.09.08.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.09)where (A)3 (XO4)2 Zq · x(H2O) |
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(42.09.08)Dana Group |
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![]() 08.EC.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.E - Uranyl Phosphates and Arsenates |
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08.EC -UO2:RO4 = 3:2 |
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| Other Dewindtite Information![]() NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4:Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4) |
![]() Links to other databases for Dewindtite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - Uranium Minerals 16 - WWW-MINCRYST Search for Dewindtite using: Visit our Advertisers for Dewindtite : A Bijoux Google Search for DewindtiteAdam's Minerals Google Search for Dewindtite Cape Minerals Google Search for Dewindtite Dakota Matrix Minerals Google Search for Dewindtite Excalibur Mineral Corp. Google Search for Dewindtite Exceptional Minerals Google Search for Dewindtite John Betts Fine Minerals Search for Dewindtite McDougall Minerals Google Search for Dewindtite Mineral News Website Link Rock and Mineral Shows Google Search for Dewindtite Weinrich Minerals, Inc. Google Search for Dewindtite Ask about Dewindtite here : Print or Cut-and-Paste your Dewindtite Specimen Label here :
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