Input interpretation
urea (mineral) | humboldtine (mineral)
Images
Images
General properties
| urea | humboldtine alternate names | (none) | humboldtina formula | CO(NH_2)_2 | Fe^(2+)(C_2O_4)·2(H_2O) discovery year | 1973 | 1821
Basic properties
| urea | humboldtine density | 1.33 g/cm^3 | 2.28 g/cm^3 transparency | translucent | transparent birefringence | 0.119 | 0.198 luster | | resinous | dull Mohs hardness | | 1.75 streak | yellow white | light yellow magnetism | nonmagnetic | nonmagnetic color | light brown | light yellow | brownish yellow | yellow molar mass | 60.06 g/mol | 179.9 g/mol
Units
Mineral identifiers
| urea | humboldtine Strunz ID | IX/D.01-10 | IX/A.01-50 Dana ID | 50.4.6.1 | 50.1.3.1 IMA number | IMA1972-031 | ICSD number | ICSD29364 | ICSD16813
Crystallographic properties
| urea | humboldtine crystal system | tetragonal | monoclinic crystal class | -42m | 2/m unit cell volume | 149.9 Å^3 (cubic ångströms) | 518 Å^3 (cubic ångströms) d-spacing | 3.98 Å (ångströms) | 3.04 Å (ångströms) | 3.61 Å (ångströms) | 4.8 Å (ångströms) | 4.7 Å (ångströms) | 3.004 Å (ångströms) intensity | 100% | 30% | 20% | 100% | 65% | 50% molecules per unit cell | 2 molecules per cell | 4 molecules per cell refractive indices | 0 | 0 | 0 | 1.484 | 0 | 0 | 1.494 | 0 | 0 | 0 | 0 | 0 dispersion | | weak unit cell lengths | 5.646 Å (ångströms) | 5.646 Å (ångströms) | 4.701 Å (ångströms) | 9.921 Å (ångströms) | 5.556 Å (ångströms) | 9.707 Å (ångströms) unit cell angles | 90° (degrees) | 90° (degrees) | 90° (degrees) | 90° (degrees) | 104.5° (degrees) | 90° (degrees)
Wikipedia summary
Urea
Urea, also known as carbamide, is an organic compound with chemical formula CO(NH_2)_2. This amide has two-NH_2 groups joined by a carbonyl (C=O) functional group.