| Uricite | |
| Formula: | C5H4N4O3 |
| Imasymbol: | Uri[1] |
| Strunz: | 10.CA.40 |
| System: | Monoclinic |
| Class: | Prismatic (2/m) (same H-M symbol) |
| Symmetry: | P21/a |
| Unit Cell: | a = 14.46 Å, b = 7.4 Å c = 6.2 Å; β = 65.2°; Z = 4 |
| Color: | Yellowish white, colorless, light brown |
| Mohs: | 1–2 |
| Streak: | White |
| Diaphaneity: | Translucent |
| Gravity: | 1.85 (calculated) |
| Opticalprop: | Biaxial |
| References: | [2] [3] [4] |
Uricite is a rare organic mineral form of uric acid, C5H4N4O3. It is a soft yellowish white mineral which crystallizes in the monoclinic system.
It was first described in 1973 for an occurrence in bat guano in Dingo Donga Cave, Eucla, Western Australia.[2] The name is for its composition, anhydrous uric acid. It occurs with biphosphammite, brushite and syngenite at the type locality in Dingo Donga Cave.[3]