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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 :
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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
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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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Guanine details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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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.
    Hide Locality List
    (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
      • Eucla
        • Madura Motel
    		Mineralogical Magazine (1977): 41: 33-35.
      • Nullarbor Plain
        • Eucla
    		Mineralogical Magazine (1974): 39: 889.-890.; Caves: processes, development, and management By David S. Gillieson
    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
    		Minerals of South Africa
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 19th Jun 2011 13:23:41
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