Uricite

Formula: C₅H₄N₄O₃

Origin of name: from uric acid, occurrence in urine

Crystal system: Monoclinic

Crystal class: 2/m

Twinning:

Unit cell: a = 14.465, b = 7.403, c = 6.208, β = 65.2°

Colour: Colourless, yellowish white

Diaphaneity: Translucent

Luster: 

Habit: 

Hardness: 1-2

Specific gravity: 1.85

Cleavage: none

Tenacity: 

Streak: White

Synonyms/varieties:

Comments: also known as 2,6,8-trihydroxypurine, a component of guano