Uricite
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Formula:
C5H4N4O3
System:
Monoclinic
Colour:
yellowish white, ...
Hardness:
1 - 2
Name:
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).
2,6,8-trihydroxypurine according to the organic chemical nomenclature.
See also the visually very similar Unnamed (Uric Acid Dihydrate).
Classification of Uricite
Approved
Approval Year:
1973
9/D.01-40
10.CA.40
10 : ORGANIC COMPOUNDS
C : Miscellaneous Organic Minerals
A : Miscellaneous Organic Minerals
10 : ORGANIC COMPOUNDS
C : Miscellaneous Organic Minerals
A : Miscellaneous Organic Minerals
50.4.4.1
50 : ORGANIC COMPOUNDS
4 : Miscellaneous
50 : ORGANIC COMPOUNDS
4 : Miscellaneous
32.14
32 :
32 :
Physical Properties of Uricite
Diaphaneity (Transparency):
Translucent
Colour:
yellowish white, colourless, light brown
Streak:
white
Hardness (Mohs):
1 - 2
Chemical Properties of Uricite
Formula:
C5H4N4O3
Elements listed in formula:
CAS Registry number:
Crystallography of Uricite
Crystal System:
Monoclinic
Cell Parameters:
a = 14.46 Å, b = 7.4 Å, c = 6.2 Å
β = 65.2°
β = 65.2°
Ratio:
a:b:c = 1.954 : 1 : 0.838
Unit Cell Volume:
V 602.24 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.55 | (43) |
| 4.91 | (51) |
| 3.864 | (42) |
| 3.180 | (55) |
| 3.093 | (100) |
| 3.087 | (69) |
| 2.866 | (25) |
Type Occurrence of Uricite
Relationship of Uricite to other Species
| 10.CA. | Tholins | (C,H,N) |
| 10.CA.05 | Refikite | C20H32O2 |
| 10.CA.10 | Flagstaffite | C10H22O3 |
| 10.CA.15 | Hoelite | C14H8O2 |
| 10.CA.20 | Abelsonite | Ni(C31H32N4) |
| 10.CA.25 | Kladnoite | C6H4(CO)2NH |
| 10.CA.30 | Guanine | C5H5N5O |
| 10.CA.30 | Tinnunculite (of Chesnokov & Shcherbakova) | C10H12N8O8 |
| 10.CA.35 | Urea | CO(NH2)2 |
| 32.1 | Evenkite | C21H44 |
| 32.2 | Fichtelite | C19H34 |
| 32.3 | Simonellite | C19H24 |
| 32.4 | Kratochvílite | C13H10 |
| 32.5 | Idrialite | C22H14 |
| 32.6 | Carpathite | C24H12 |
| 32.7 | Refikite | C20H32O2 |
| 32.8 | Flagstaffite | C10H22O3 |
| 32.9 | Hoelite | C14H8O2 |
| 32.10 | Kladnoite | C6H4(CO)2NH |
| 32.11 | Acetamide | CH3CONH2 |
| 32.12 | Guanine | C5H5N5O |
| 32.13 | Urea | CO(NH2)2 |
| 32.15 | Abelsonite | Ni(C31H32N4) |
Other Names for Uricite
Other Information
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 Uricite
Reference List:
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.
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 Uricite
mindat.org URL:
https://www.mindat.org/min-4118.html
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Please feel free to link to this page.
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Localities for Uricite
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.
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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia (TL) | |
| Mineralogical Magazine (1974): 39: 889.-890. |
Austria | |
| Kolitsch, U. et al., to be published |
| Löffler & Kolitsch (2011) (in press) |
| peter neschen collection |
Germany | |
| 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). |
| Habel, M. (2007): Neufunde aus dem östlichen Bayerischen Wald (VII). Mineralien-Welt, 18 (2), 59-64. [Eitzing quarry] |
| Mineralien-Welt 18 (5) (2007) 20-26. |
| Blaß, G. & Möhn, G. (2010): Neue Mineralien von der Grube Mark bei Essershausen im Taunus. Mineralien-Welt 21 (2), 26-29. |
| Möhn, G., Frohwein, J. & Blaß, G. (2009): Neue Mineralfunde von der Grube Friedrichssegen bei Bad Ems. Lapis 34 (5), 35-40; 58. |
Italy | |
| G. Blass (EDX) - U. Kolitsch (PXRD) - April 2010 |
Russia | |
| Tony Nikischer |
Dingo Donga Cave, Madura Roadhouse, Dundas Shire, Western Australia, Australia