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Tinnunculite

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Common Kestrel - falco tinnunculus
Formula:
C5H4N4O3 · 2H2O
System:
Monoclinic
Name:
Named after the Common Kestrel (Falco tinnunculus).
Not to be confused with Tinnunculite (of Chesnokov & Shcherbakova).

A naturally occurring dihydrate of uricite (uric acid) to which it is visually very similar.
Well-known rare component of urinary and other stones.

Chemically (C-H-N-O) similar to other organic minerals: guanine, uricite; also acetamide, kladnoite.


Classification of Tinnunculite

Approved, Pending publication
Approval Year:
2015

Chemical Properties of Tinnunculite

IMA Formula:
C5H4N4O3 · 2H2O
Elements listed in formula:

Crystallography of Tinnunculite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Space Group Setting:
P21/c
Cell Parameters:
a = 7.261(9) Å, b = 6.365(7) Å, c = 17.48(3) Å
β = 91.0(1)°
Ratio:
a:b:c = 1.141 : 1 : 2.746
Unit Cell Volume:
V 807.74 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
8.82(84)
5.97(15)
5.63(24)
4.22(22)
3.24(27)
3.18(100)
3.116(44)
2.576(14)
Comments:
From Type Description.

Type Occurrence of Tinnunculite

Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4695/1

Other Names for Tinnunculite

Name in Other Languages:

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 Tinnunculite

Reference List:
Ringertz, H. (1965): Optical and crystallographic data of uric acid and its dihydrate. Acta Crystallogr. 19, 286-287.

Lonsdale, K. & Mason, P. (1966): Uric acid, uric acid dihydrate, and urates in urinary calculi, ancient and modern. Science 152, 1511-1512.

Shirley, R. (1966): Uric acid dihydrate: Crystallography and identification. Science 152, 1512-1513.

Lonsdale, K. & Sutor, D. J. (1971): Uric acid dihydrate in bird urine. Science 172, 958-959.

Hesse, A.; Schneider, H. J.; Berg, W.; Hienzsch, E. (1975): Uric acid dihydrate as urinary calculus component. Investigative Urology 12, 405-409.

Yong Go, K.; Boerner, R. H.; Berg, W.; Schneider, H. J. (1980): Stabilization factors for uric acid dihydrate - a contribution to urine stone formation. Jenaer Harnsteinsymposium 6, 71-74 (in German).

Dosch, W. (1981): New urates (II): uric acid and uric acid dihydrate. Fortschritte der Urologie und Nephrologie 17, 254-264 (in German).

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.

Babic-Ivancic, V., Furedi-Milhofer, H., Brown, W. E. & Gregory, T. M. (1987): Precipitation diagrams and solubility of uric acid dihydrate. Journal of Crystal Growth 83, 581-587.

Artioli, G., Galli, E. & Ferrari, M. (1993): Uric acid dihydrate - a new mineral? Rivista Mineralogica Italiana (4), 261-264 (in Italian).

Artioli, G., Masciocchi, N. and Galli, E. (1997): The elusive crystal structure of uric acid dihydrate: implication for epitaxial growth during biomineralization. Acta Crystallogr. B53, 498-503.

Parkin, S. & Hope, H. (1998): Uric acid dihydrate revisited. Acta Crystallogr. B54, 339-344.

Zellelow, A. Z., Kim, K.-H., Sours, R. E. & Swift, J. A. (2010): Solid-state dehydration of uric acid dihydrate. Cryst. Growth Des., 10, 418-425.

Pekov, I.V., Chukanov, N.V., Belakovskiy, D.I., Lykova, I.S., Yapaskurt, V.O., Zubkova, N.V., Shcherbakova, E.P. Britvin, S.N. (2016) Tinnunculite, IMA 2015- 021a. CNMNC Newsletter No. 29, February 2016, page 202. Mineralogical Magazine: 80: 199–205.

Internet Links for Tinnunculite

mindat.org URL:
https://www.mindat.org/min-47018.html
Please feel free to link to this page.

Localities for Tinnunculite

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.
(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.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Gastein valley
        • Naßfeld valley
          • Sportgastein
Kolitsch, U. & Raade, G. (2011): Uric acid dihydrate: occurrences in Austria and Norway. Norsk Bergverksmuseum Skrift. 46, 25-29. [as Unnamed (Uric Acid Dihydrate)]
      • Rauris valley
        • Hüttwinkl valley
          • Alteck - Hoher Sonnblick area
            • Kolm-Saigurn
Kolitsch, U. & Habel, M. (2012): 1752) Harnsäuredihydrat von der Hüttwinkelache bei Kolm Saigurn, Rauris, Salzburg. Pp. 157 in Niedermayr, G. et al. (2012): Neue Mineralfunde aus Österreich LXI. Carinthia II, 202./122., 123-180. [as Unnamed (Uric Acid Dihydrate)]
Italy
 
  • Emilia-Romagna
    • Modena Province
Artioli, G., Galli, E. & Ferrari, M. (1993): Uric acid dihydrate - a new mineral? Rivista Mineralogica Italiana (4), 261-264 (in Italian). [as Unnamed (Uric Acid Dihydrate)]
  • Piedmont
    • Torino Province
      • Pellice Valley
        • Luserna Valley
Cámara F., Bittarello E., Ciriotti M.E., Nestola F., Radica F., Massimi F., Balestra C., Bracco R. (2017): As-bearing new mineral species from La Valletta mine, Maira Valley, Piedmont, Italy: III. Canosioite, Ba2Fe3+(AsO4)2(OH), description and crystal structure. Mineralogical Magazine, (1 (in press)
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Divedro Valley
          • Varzo
Cuchet, S., Crumbach, M. & van der Burgt, A. (2016) Le allaniti e i minerali di terre rare dell'Alpe Veglia (Varzo, Verbano-Cusio-Ossola). Rivista Mineralogica Italiana, 40, 212-241.
Norway
 
  • Buskerud
    • Modum
      • Åmot
Kolitsch, U. & Raade, G. (2011): Uric acid dihydrate: occurrences in Austria and Norway. Norsk Bergverksmuseum Skrift. 46, 25-29. [as Unnamed (Uric Acid Dihydrate)]
Russia (TL)
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Pekov, I.V., Chukanov, N.V., Belakovskiy, D.I., Lykova, I.S., Yapaskurt, V.O., Zubkova, N.V., Shcherbakova, E.P. and Britvin, S.N. (2016) Tinnunculite, IMA 2015- 021a. CNMNC Newsletter No. 29, February 2016, page 202; Mineralogical Magazine, 80, 199–205.
Mineral and/or Locality  
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