Guanine Mineral Data

General Guanine Information

Chemical Formula:

C5H3(NH2)N4O

Composition:

Molecular Weight = 151.13 gm

Hydrogen 3.33 % H

Carbon 39.74 % C

Nitrogen 46.34 % N

Oxygen 10.59 % O

______

100.00 %

Empirical Formula:

C₅H₅N₅O

Environment:

In guano derived from seabirds and formed as a reaction to bat guano and urine with limestone in the cave.

IMA Status:

Valid Species (Pre-IMA) 1844

Locality:

North Chincha Isalnd, Peru and Murra-el-elevyn cave, Cockabiddy Nullabor Plani WA, Australia. Link to MinDat.org Location Data.

Name Origin:

Namd for its derivation from and association with guano.

Name Pronunciation:

Guanine

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Guanine Crystallography

Axial Ratios:

a:b:c =1.464:1:0.3232

Cell Dimensions:

a = 16.51, b = 11.277, c = 3.645, Z = 4; beta = 96.8° V = 673.86 Den(Calc)= 1.49

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.22(1), 6.32(0.7), 3.53(0.5),

Crystal Structure:

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Thewalt U , Bugg C E , Marsh R E , Acta Crystallographica, Section B , 27 (1971) p.2358-2362, The crystal structure of guanine monohydrate, Locality: synthetic

Physical Properties of Guanine

Color:

White.

Density:

1.485

Hardness:

1-2 - Between Talc and Gypsum

Streak:

white

Calculated Properties of Guanine

Electron Density:

Bulk Density (Electron Density)=1.54 gm/cc
note: Specific Gravity of Guanine =1.49 gm/cc.

Fermion Index:

Fermion Index = 0.46
Boson Index = 0.54

Photoelectric:

PE_Guanine= 0.23 barns/electron
U=PE_Guanine x rElectron Density= 0.35 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Guanine is Not Radioactive

Guanine Classification

Dana Class:

50.04.05.01 (50)Salts of Organic Acids

(50.04)with miscellaneous formulae

(50.04.05)Dana Group

50.04.05.01 Guanine C5H3(NH2)N4O P 2₁/n 2/m

Strunz Class:

10.CA.30 10 - ORGANIC COMPOUNDS

10.C - Miscellaneous Organic Minerals

10.CA -Miscellaneous Organic Materials

10.CA.30 Guanine C5H3(NH2)N4O P 2₁/n 2/m

10.CA.30 Tinnunculite* C10H12N6O8(?) Unk Ortho

Other Guanine Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Guanine :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Guanine Specimen Label here :

Guanine

C5H3(NH2)N4O
Dana No: 50.04.05.01 Strunz No: 10.CA.30
Locality:

Notes: