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Guanine

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Formula:
C
 
5
H
 
5
N
 
5
O
System:MonoclinicColour:white
Hardness:1 - 2
This page provides mineralogical data about Guanine.

Classification of Guanine

IMA status:Approved 1973
Strunz 8th edition ID:9/D.01-50
Nickel-Strunz 10th (pending) edition ID:10.CA.30

10 : ORGANIC COMPOUNDS
C : Miscellaneous Organic Minerals
A : Miscellaneous Organic Minerals
Dana 8th edition ID:50.4.5.1

50 : ORGANIC COMPOUNDS
4 : Miscellaneous
Hey's CIM Ref.:32.12

32 :
mindat.org URL:http://www.mindat.org/min-1763.html
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Type Occurrence of Guanine

Type Locality:North Chincha Island, Peru
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:
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:
C
 
5
H
 
5
N
 
5
O
Simplified for copy/paste:C5H5N5O
Essential elements:C, H, N, O
All elements listed in formula:C, H, N, O

Relationship of Guanine to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
10.CA.05Refikite
C
 
20
H
 
32
O
 
2
10.CA.10Flagstaffite
C
 
10
H
 
22
O
 
3
10.CA.15Hoelite
C
 
14
H
 
8
O
 
2
10.CA.20Abelsonite
Ni(C
 
31
H
 
32
N
 
4
)
10.CA.25Kladnoite
C
 
6
H
 
4
(CO)
 
2
NH
10.CA.30Tinnunculite
C
 
10
H
 
12
N
 
8
O
 
8
10.CA.35Urea
CO(NH
 
2
)
 
2
10.CA.40Uricite
C
 
5
H
 
4
N
 
4
O
 
3
Related Minerals - Hey's Index Grouping:

- +
32.1Evenkite
C
 
21
H
 
44
32.2 Fitchtelite
32.3Simonellite
C
 
19
H
 
24
32.4Kratochvílite
C
 
13
H
 
10
32.5Idrialite
C
 
22
H
 
14
32.6Carpathite
C
 
24
H
 
12
32.7Refikite
C
 
20
H
 
32
O
 
2
32.8Flagstaffite
C
 
10
H
 
22
O
 
3
32.9Hoelite
C
 
14
H
 
8
O
 
2
32.10Kladnoite
C
 
6
H
 
4
(CO)
 
2
NH
32.11Acetamide
CH
 
3
CONH
 
2
32.13Urea
CO(NH
 
2
)
 
2
32.14Uricite
C
 
5
H
 
4
N
 
4
O
 
3
32.15Abelsonite
Ni(C
 
31
H
 
32
N
 
4
)

Other Names for Guanine

Synonyms:
IMA1973-056
Other Languages:
German:Guanin

Other Information

Health Warning: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

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Guanine details from Handbook of Mineralogy (PDF)
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  • Localities for Guanine

    The 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. ? 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
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