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General Urea Information |
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 Chemical Formula: |
CO(NH2)2 | ||
| Composition: |
Molecular Weight = 60.06 gm | ||
| Hydrogen 6.71 % H | |||
| Carbon 20.00 % C | |||
| Nitrogen 46.65 % N | |||
| Oxygen 26.64 % O | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
CO(NH2)2 | ||
| Environment: |
Derived from bat guano and urine, stable only under very arid conditions. | ||
| IMA Status: |
Approved IMA 1973 | ||
| Locality: |
Toppin Hill, near Lake Rason, about 320 km northeast of Kalgoorlie, and in Wilgie Mia Cave, Western Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
From the Greek for urine, in which urea was first found. | ||
| Name Pronunciation: |
Urea  |
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| Synonym: |
ICSD 29364 | ||
| PDF 28-2015 | |||
Urea Image | |||
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Images:
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Urea Crystallography |
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| Axial Ratios: |
a:c = 1:0.83262 | ||
| Cell Dimensions: |
a = 5.646, c = 4.701, Z = 2; V = 149.86 Den(Calc)= 1.33 | ||
| Crystal System: |
Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: P 421m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.98(1), 3.04(0.3), 3.61(0.2), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Urea |
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| Color: |
Light brown, Light yellow. | ||
| Density: |
1.33 | ||
| Streak: |
yellow white | ||
Optical Properties of Urea |
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| Optical Data: |
Uniaxial (+), w=1.484, e=1.603, bire=0.1190. | ||
Calculated Properties of Urea |
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| Electron Density: |
Bulk Density (Electron Density)=1.42 gm/cc note: Specific Gravity of Urea =1.33 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.46 Boson Index = 0.54 |
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| Photoelectric: |
PEUrea = 0.26 barns/electron U=PEUrea x rElectron Density= 0.37 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Urea is Not Radioactive |
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Urea Classification |
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| Dana Class: |
50.04.06.01 (50)Salts of Organic Acids | ||
| (50.04)with miscellaneous formulae | |||
| (50.04.06)Dana Group | |||
| Strunz Class: |
10.CA.35 10 - ORGANIC COMPOUNDS | ||
| 10.C - Miscellaneous Organic Minerals | |||
| 10.CA -Miscellaneous Organic Materials | |||
Other Urea Information |
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Urea : 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 Search for Urea using: Visit our Advertisers for Urea : A Bijoux Google Search for UreaAdam's Minerals Google Search for Urea Cape Minerals Google Search for Urea Dakota Matrix Minerals Google Search for Urea Excalibur Mineral Corp. Google Search for Urea Exceptional Minerals Google Search for Urea John Betts Fine Minerals Search for Urea McDougall Minerals Google Search for Urea Mineral News Website Link Rock and Mineral Shows Google Search for Urea Weinrich Minerals, Inc. Google Search for Urea Ask about Urea here : Print or Cut-and-Paste your Urea Specimen Label here :
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