[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions] Dan Weinrich Fine Minerals Full-time professional mineral dealer with over 31 years experience in mineral collecting And 15 years selling mineral specimens on the internet and at major mineral shows General Soddyite Information(UO2)2SiO4•2(H2O) |
Molecular Weight = 668.17 gm |
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Uranium 71.25 % U 80.83 % UO2 |
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Silicon 4.20 % Si 8.99 % SiO2 |
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Hydrogen 0.60 % H 5.39 % H2O |
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Oxygen 23.95 % O |
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100.00 % 95.21 % = TOTAL OXIDE |
(UO2)2(SiO4)•2(H2O) |
Mixed with curite in oxidized uranium ores. |
Valid Species (Pre-IMA) 1922 |
Shinkolobwe, Shaba, Democratic Republic of the Congo (Zaire). Link to MinDat.org Location Data. |
Named for Frederick Soddy (1877-1956), British radiochemist and physicist. |
Soddyite |
ICSD 66313 |
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PDF 35-491 |
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Soddyite Crystallographya:b:c =0.7421:1:1.669 |
a = 8.32, b = 11.21, c = 18.71, Z = 8; V = 1,745.03 Den(Calc)= 5.09 |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: F ddd |
By Intensity(I/Io): 4.57(1), 3.36(0.9), 6.28(0.9), |
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Mouse
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| Physical Properties of Soddyite{001} Perfect, {111} Good |
Yellow, Canary yellow, Yellowish green, Yellow. |
4.627 |
Transparent to translucent |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Pyramidal - Crystals are shaped like pyramids. |
Striated - Parallel lines on crystal surface or cleavage face. |
3-4 - Calcite-Fluorite |
Fluorescent, Short UV=weak orange yellow, Long UV=weak orange yellow. |
Vitreous (Glassy) |
yellow |
| Optical Properties of SoddyiteCI meas= -0.249 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.136 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1339,KPDmeas= 0.1473,KC= 0.1179 Ncalc = 1.55 - 1.6 Biaxial (-), a=1.65-1.654, b=1.685, g=1.699-1.715, bire=0.0490-0.0610 |
colorless. |
pale yellow. |
pale yellow green. |
| Calculated Properties of SoddyiteBulk Density (Electron Density)=4.30 gm/cc |
note: Specific Gravity of Soddyite =5.09 gm/cc. Fermion Index = 0.007208671 |
Boson Index = 0.992791329 PESoddyite =1,915.19 barns/electron |
U=PESoddyite x relectron=8,228.52 barns/cc. |
GRapi = 5,126,250.25 (Gamma Ray American Petroleum Institute Units)
Soddyite 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)
5.93 ± 1.48 grams of pure Soddyite .
Weight of pure Soddyite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.09 gm/cc.* | Soddyite Classification53.03.03.01 (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations |
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(53.03)with (UO2) |
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(53.03.03)Other uranyl sillicates |
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09.AK.05 09 - SILICATES (Germanates) |
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09.A - Nesosilicates |
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09.AK -Uranyl neso- and polysilicates |
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| Other Soddyite InformationNAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
Links to other databases for Soddyite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - Uranium Minerals 16 - WWW-MINCRYST Search for Soddyite using: Visit our Advertisers for Soddyite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Diamond Dan Publications Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Soddyite Mineral Data : Ask about Soddyite here : Print or Cut-and-Paste your Soddyite Specimen Label here :
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