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Material properties of common natural and artificial kidney stone compositions: calcium oxalate monohydrate (COM), calcium oxalate dihydrate (COD), struvite-magnesium ammonium phosphate hexahydrate (MAPH), and Ultracal-30 (United States Gypsum Company, Chicago, Illinois) gypsum artificial stone (U-30).
| Material | Density (kg/m3) | Longitudinal velocity, (m/s) | Shear velocity (m/s) |
|---|---|---|---|
| COM | 1823 | 4476 | 2247 |
| COD | 1875 | 2687 | 1344 |
| MAPH | 1587 | 2798 | 1634 |
| U-30 | 1693 | 3180 | 1880 |
