Uricite

 Uricite is a rare organic mineral form of uric acid, C₅H₄N₄O₃. It is a soft yellowish white mineral which crystallizes in the monoclinic system.

Uricite
General
Category	Mineral
Formula (repeating unit)	C5H4N4O3
Strunz classification	10.CA.40
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	P21/a
Unit cell	a = 14.46 Å, b = 7.4 Å c = 6.2 Å; β = 65.2°; Z = 4
Identification
Color	Yellowish white, colorless, light brown
Mohs scale hardness	1-2
Streak	White
Diaphaneity	Translucent
Specific gravity	1.85 (calculated)
Optical properties	Biaxial
References

Discovery and occurrenceEdit

It was first described in 1973 for an occurrence in bat guano in Dingo Donga Cave, Eucla, Western Australia.^[1] The name is for its composition, anhydrous uric acid. It occurs with biphosphammite, brushite and syngenite at the type locality in Dingo Donga Cave.

This article uses material from the Wikipedia article  Metasyntactic variable, which is released under the  Creative Commons Attribution-ShareAlike 3.0 Unported License.