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yellowish white, colourless, light brown
1 - 2
Crystal System:
The name reflects its chemical identity: uric acid.
Natural uric acid.
2,6,8-trihydroxypurine according to the organic chemical nomenclature.

See also the visually very similar Unnamed (Uric Acid Dihydrate).

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Classification of UriciteHide

Approval Year:

C : Miscellaneous Organic Minerals
A : Miscellaneous Organic Minerals

4 : Miscellaneous

32 :

Physical Properties of UriciteHide

yellowish white, colourless, light brown
1 - 2 on Mohs scale

Chemical Properties of UriciteHide

CAS Registry number:

CAS Registry numbers are published by the American Chemical Society

Crystallography of UriciteHide

Crystal System:
Cell Parameters:
a = 14.46 Å, b = 7.4 Å, c = 6.2 Å
β = 65.2°
a:b:c = 1.954 : 1 : 0.838
Unit Cell V:
602.24 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.55 (43)
4.91 (51)
3.864 (42)
3.180 (55)
3.093 (100)
3.087 (69)
2.866 (25)

Type Occurrence of UriciteHide

Synonyms of UriciteHide

Other Language Names for UriciteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Dolomite2 photos of Uricite associated with Dolomite on
Quartz2 photos of Uricite associated with Quartz on

Related Minerals - Nickel-Strunz GroupingHide

10.CA.05RefikiteC20H32O2Orth. 2 2 2 : P21 21 2
10.CA.20AbelsoniteNi(C31H32N4)Tric. 1 : P1
10.CA.25KladnoiteC6H4(CO)2NHMon. 2/m
10.CA.30Tinnunculite (of Chesnokov & Shcherbakova)C10H12N8O8Orth.
10.CA.35UreaCO(NH2)2Tet. 4 2m : P4 21m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

32.1EvenkiteC21H44Orth. mmm (2/m 2/m 2/m) : Pbcm
32.3SimonelliteC19H24Orth. mmm (2/m 2/m 2/m) : Pnna
32.6CarpathiteC24H12Mon. 2/m : P21/b
32.7RefikiteC20H32O2Orth. 2 2 2 : P21 21 2
32.10KladnoiteC6H4(CO)2NHMon. 2/m
32.11AcetamideCH3CONH2Trig. 3m : R3c
32.13UreaCO(NH2)2Tet. 4 2m : P4 21m
32.15AbelsoniteNi(C31H32N4)Tric. 1 : P1

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for UriciteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ringertz, H. (1965): Optical and crystallographic data of uric acid and its dihydrate. Acta Crystallogr. 19, 286-287.
Ringertz, H. (1966): The molecular and crystal structure of uric acid. Acta Crystallogr., 20, 397-403.
Lonsdale, K. & Mason, P. (1966): Uric acid, uric acid dihydrate, and urates in urinary calculi, ancient and modern. Science 152, 1511-1512.
Shirley, R. & Sutor, D. J. (1968): Anhydrous uric acid: nature and occurrence of a new form in urinary calculi. Science 159, 544.
Bridge, P. J. (1974): Guanine and uricite, two new organic minerals from Peru and Western Australia. Mineralogical Magazine 39, 889-890.
Rinaudo, C. & Boistelle, R. (1980): The occurrence of uric acids and the growth morphology of the anhydrous monoclinic modification: C5H4N4O3. Journal of Crystal Growth 49, 569-579.
Boistelle, R. & Rinaudo, C. (1981): Phase transition and epitaxies between hydrated orthorhombic and anhydrous monoclinic uric acid crystals. Journal of Crystal Growth 53, 1-9.

Internet Links for UriciteHide

Localities for UriciteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
  • Western Australia
    • Dundas Shire
      • Madura Roadhouse
Mineralogical Magazine (1974): 39: 889.-890.
  • Burgenland
    • Oberpullendorf
      • Kobersdorf
        • Pauliberg
Kolitsch, U. et al., to be published
  • Lower Austria
    • Waldviertel
      • Persenbeug-Gottsdorf
Löffler & Kolitsch (2011) (in press)
  • Upper Austria
    • Mühlviertel
      • Perg
        • Dimbach
peter neschen collection
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
U. Kolitsch, J. Gröbner, F. Brandstätter and R. Bayerl (2010): Neufunde aus der Grube Clara im mittleren Schwarzwald (IV): Calcioandyrobertsit, Cotunnit, Gerhardtit, Khaidarkanit, Lukrahnit, Mckinstryit, Moolooit, Rhabdophan-(La), Rouait und Uricit. Lapis 35 (9), 22-27; 62 (in German).
  • Bavaria
    • Lower Bavaria
      • Tittling
        • Hötzendorf
Habel, M. (2007): Neufunde aus dem östlichen Bayerischen Wald (VII). Mineralien-Welt, 18 (2), 59-64. [Eitzing quarry]
      • Untergriesbach
        • Kropfmühl
Mineralien-Welt 18 (5) (2007) 20-26.
  • Hesse
    • Wetzlar
      • Weilburg
        • Essershausen
Blaß, G. & Möhn, G. (2010): Neue Mineralien von der Grube Mark bei Essershausen im Taunus. Mineralien-Welt 21 (2), 26-29.
  • Rhineland-Palatinate
    • Lahn valley
      • Bad Ems District
        • Frücht
Möhn, G., Frohwein, J. & Blaß, G. (2009): Neue Mineralfunde von der Grube Friedrichssegen bei Bad Ems. Lapis 34 (5), 35-40; 58.
  • Piedmont
    • Torino Province
      • Pellice Valley
        • Luserna Valley
G. Blass (EDX) - U. Kolitsch (PXRD) - April 2010
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Yemanzhelinsk (Emanzhelinsk)
Tony Nikischer
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