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Guanine

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Formula:
C5H5N5O
System:
Monoclinic
Colour:
white
Hardness:
1 - 2
This page provides mineralogical data about Guanine.

Classification of Guanine

Approved 1973
10.CA.30

10 : ORGANIC COMPOUNDS
C : Miscellaneous Organic Minerals
A : Miscellaneous Organic Minerals
50.4.5.1

50 : ORGANIC COMPOUNDS
4 : Miscellaneous
32.12

32 :
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First Recorded Occurrence of Guanine

Year of Discovery:
1844

Physical Properties of Guanine

Colour:
white
Streak:
white
Hardness (Mohs):
1 - 2

Crystallography of Guanine

Crystal System:
Monoclinic
Cell Parameters:
a = 16.51Å, b = 11.27Å, c = 3.64Å
β = 96.8°
Ratio:
a:b:c = 1.465 : 1 : 0.323
Unit Cell Volume:
V 672.52 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
7.9 (40)
6.32 (70b)
3.53 (50)
3.22 (100b)
2.63 (50)
2.00 (50)
1.80 (50)

Chemical Properties of Guanine

Formula:
C5H5N5O
Essential elements:
All elements listed in formula:

Relationship of Guanine to other Species

10.CA.05RefikiteC20H32O2
10.CA.10FlagstaffiteC10H22O3
10.CA.15HoeliteC14H8O2
10.CA.20AbelsoniteNi(C31H32N4)
10.CA.25KladnoiteC6H4(CO)2NH
10.CA.30TinnunculiteC10H12N8O8
10.CA.35UreaCO(NH2)2
10.CA.40UriciteC5H4N4O3
32.1EvenkiteC21H44
32.2 Fitchtelite
32.3SimonelliteC19H24
32.4KratochvíliteC13H10
32.5IdrialiteC22H14
32.6CarpathiteC24H12
32.7RefikiteC20H32O2
32.8FlagstaffiteC10H22O3
32.9HoeliteC14H8O2
32.10KladnoiteC6H4(CO)2NH
32.11AcetamideCH3CONH2
32.13UreaCO(NH2)2
32.14UriciteC5H4N4O3
32.15AbelsoniteNi(C31H32N4)

Other Names for Guanine

Name in Other Languages:
German:Guanin

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 Guanine

Reference List:
Mineralogical Magazine: 39: 889-890.

Internet Links for Guanine

Localities for Guanine

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.
Australia
 
  • Western Australia
    • Dundas Shire
      • Cocklebiddy Roadhouse
Mineralogical Magazine (1974): 39: 889.-890.; Caves: processes, development, and management By David S. Gillieson
      • Madura Roadhouse
Mineralogical Magazine (1977): 41: 33-35.
Chile
 
  • Antofagasta Region
    • El Loa Province
      • San Pedro de Atacama
        • Cordillera de la Sal
De Waele, J., Forti, P., Picotti, V., Galli, E., Rossi, A., Brook, G., & Cucchi, F. (2009). Cave deposits in Cordillera de la Sal (Atacama, Chile). Geological Constrains on the Onset and Evolution of an Extreme Environment: the Atacama area. Geoacta, Special Publication, 2, 113-117.
Mexico
 
  • Coahuila
    • Mun. de Cuatrociénegas
      • Cuatro Ciénegas (Cuatrociénegas de Carranza; Venustiano Carranza)
        • Limestone caves
Forti, P. et al. (2006): ACTA CARSOLOGICA 35/1, 79–98.
Peru
 
Min Mag 39 (1974), 889
South Africa
 
  • Western Cape Province
    • West Coast District
Minerals of South Africa
Mineral and/or Locality  
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