Godovikovite Mineral Data + 
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- 28.3.5.1 Sabieite (NH4)Fe(SO4)2 P 321 3 2
- 28.3.5.2 Godovikovite (NH4)(Al,Fe)(SO4)2 P 321 3 2
- VI/A.05-10 Godovikovite (NH4)(Al,Fe)(SO4)2 P 321 3 2
- VI/A.05-20 Sabieite (NH4)Fe(SO4)2 P 321 3 2
General Godovikovite Information |
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 Chemical Formula: |
(NH4)(Al,Fe+++)(SO4)2 | ||
| Composition: |
Molecular Weight = 244.36 gm | ||
| Aluminum 8.28 % Al 15.65 % Al2O3 | |||
| Iron 5.71 % Fe 8.17 % Fe2O3 | |||
| Hydrogen 1.65 % H - % Calc as (NH4)2O | |||
| Sulfur 26.24 % S 65.53 % SO3 | |||
| Nitrogen 5.73 % N 10.66 % (NH4)2O | |||
| Oxygen 52.38 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
(NH4)Al0.75Fe3+0.25(SO4)2 | ||
| IMA Status: |
Approved IMA 1988 | ||
| Locality: |
Kopeisk, Chelyabinsk Oblast', Urals Region, Russia Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for A. A. Godovikov. | ||
Godovikovite Image | |||
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Images:
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Godovikovite Crystallography |
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| Axial Ratios: |
a:c = 1:1.74736 | ||
| Cell Dimensions: |
a = 4.75, c = 8.3, Z = 1; V = 162.18 Den(Calc)= 2.50 | ||
| Crystal System: |
Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 321 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.69(1), 2.921(0.9), 8.3(0.9), | ||
Physical Properties of Godovikovite |
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| Color: |
White, Colorless. | ||
| Density: |
2.53 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Earthy (Dull) | ||
| Streak: |
white | ||
Optical Properties of Godovikovite |
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| Gladstone-Dale: |
CI meas= -0.309 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.324 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2306,KPDmeas= 0.2279,KC= 0.1741 |
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| Optical Data: |
Uniaxial (+), w=1.572, e=1.581, bire=0.0090. | ||
Calculated Properties of Godovikovite |
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| Electron Density: |
relectron=2.55 gm/cc |
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| Fermion Index |
Fermion Index = 0.06054 Boson Index = 0.93946 |
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| Photoelectric: |
PEGodovikovite = 3.49 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Godovikovite is Not Radioactive |
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Godovikovite Classification |
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| Dana Class: |
28.3.5.2 (28)Anhydrous Acid and Sulfates | ||
| (28.3)(A++) XO4 | |||
| (28.3.5)Dana Group | |||
| Strunz Class: |
VI/A.05-10 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/A - Waterfree sulfates [SO4]2- without unfamiliar anions. cations of medium and very big size | |||
| VI/A.05 - Godovikovite - Sabieite series | |||
Other Godovikovite Information |
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| References: |
PHYS. PROP.(Am.Min.,Vol.75,p241,1990) OPTIC PROP.(Am.Min.,Vol.75,p241,1990) | ||
| See Also: |
Links to other databases for Godovikovite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Godovikovite using: Visit our Advertisers for Godovikovite : Translate Godovikovite Mineral Data : Ask about Godovikovite here : Print or Cut-and-Paste your Godovikovite Specimen Label here :
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