General Moganite Information
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Chemical Formula: |
SiO2 |
Composition: |
Molecular Weight = 60.08 gm |
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Silicon 46.74 % Si 100.00 % SiO2 |
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Oxygen 53.26 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
(SiO2) |
Environment: |
Polymorphic relation with quartz |
IMA Status: |
Approved IMA 1999 (Dana # Added) |
Locality: |
Mogan, on southern Gran Canaria in the Canary Islands. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Synonym: |
ICSD 67669 |
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IMA1999-035 |
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PDF 38-360 |
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Search for Moganite Images |
Images:
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Moganite Crystallography
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Axial Ratios: |
a:b:c =1.7961:1:2.1974 |
Cell Dimensions: |
a = 8.758, b = 4.876, c = 10.715, beta = 90.08° V = 457.57 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/a |
X Ray Diffraction: |
By Intensity(I/Io): 3.335(1), 4.43(0.9), 3.391(0.58),3.117(0.13), 1.83(0.11), 1.37(0.1), |
Crystal Structure:
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Heaney P J , Post J E , American Mineralogist , 86 (2001) p.1358-1366, Evidence for an I2/a to Imab phase transition in the silica, polymorph moganite at ~570 K, Sample: T = 298 K, neutron
View Additional jPOWD Structure files for Moganite
[1]
[2]
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Physical Properties of Moganite
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Color: |
Gray. |
Diaphaniety: |
Transparent |
Luster: |
Earthy (Dull) |
Streak: |
white |
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Optical Properties of Moganite
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Optical Data: |
Biaxial (?), b=1.526 |
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Calculated Properties of Moganite
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Fermion Index |
Fermion Index = 0.02208 Boson Index = 0.97792 |
Photoelectric: |
PEMoganite = 1.80 barns/electron U=PEMoganite x relectron= . barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Moganite is Not Radioactive |
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Moganite Classification
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Dana Class: |
75.1.4.2 (75)Tectosilicate Si Tetrahedral Frameworks |
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(75.1)SiO2 with [4] coordinated Si |
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(75.1.4)Dana Group |
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75.1.4.1 Coesite SiO2 C 2/c 2/m |
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75.1.4.2 Moganite ! SiO2 I2/a 2/m |
Strunz Class: |
IV/D.01-35 IV - Oxides |
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IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) |
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IV/D.01 - Quartz group |
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IV/D.01-10 Quartz SiO2 P 3121,P 3221 3 2 |
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IV/D.01-20 Tridymite SiO2 F1 1 |
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IV/D.01-30 Cristobalite SiO2 P 41212 4 2 2 |
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IV/D.01-35 Moganite SiO2 I2/a 2/m |
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IV/D.01-40 Melanophlogite SiO2·n(C,H,O,S) P 41/nbc 4/m 2/m 2/m |
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IV/D.01-40* Melanophlogite-beta! SiO2·n(C,H,O,S) P m3n 4/m 3 2/m |
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IV/D.01-50 Coesite SiO2 C 2/c 2/m |
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IV/D.01-60 Stishovite SiO2 P 4/mnm 4/m 2/m 2/m |
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IV/D.01-70 Lechatelierite* SiO2 None |
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IV/D.01-80 Opal SiO2·n(H2O) None |
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Other Moganite Information
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References: |
NAME( CanMin, Vol 38) PHYS. PROP.(CanMin, Vol 38) OPTIC PROP.(CanMin, Vol 38) |
See Also: |
Links to other databases for Moganite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - Crocoite.com Mineral Locations
4 - EUROmin Project
5 -Google Images
6 -Google Scholar
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 - WWW-MINCRYST
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Print or Cut-and-Paste your Moganite Specimen Label here :
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Moganite
SiO2
Dana No: 75.1.4.2 Strunz No: IV/D.01-35
Locality:
Notes:
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