| 词条 | Uricite |
| 释义 |
| name = Uricite | boxwidth = | boxbgcolor = | image = | imagesize = | alt = | caption = | category = | formula = C5H4N4O3 | molweight = | strunz = 10.CA.40 | dana = | 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 | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = 1-2 | luster = | streak = White | diaphaneity = Translucent | gravity = 1.85 (calculated) | density = | polish = | opticalprop = Biaxial | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | references =[1][2][3] }} Uricite is a rare organic mineral form of uric acid, C5H4N4O3. It is a soft yellowish white mineral which crystallizes in the monoclinic system. Discovery and occurrenceIt 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.[2] References1. ^1 Uricite on Mindat.org {{mineral-stub}}2. ^1 Handbook of Mineralogy 3. ^Uricite data on Webmineral 2 : Organic minerals|Monoclinic minerals |
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