Mallardite Mineral Data + 
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- 29.6.10.1 Melanterite FeSO4·7(H2O) P 21/c 2/m
- 29.6.10.2 Boothite CuSO4·7(H2O) P 21/c 2/m
- 29.6.10.3 Zinc-melanterite (Zn,Cu,Fe)SO4·7(H2O) P 21/c 2/m
- 29.6.10.4 Bieberite CoSO4·7(H2O) P 21/c 2/m
- 29.6.10.5 Mallardite MnSO4·7(H2O) P 21/c 2/m
- 29.6.10.6 IMA2003-040! (Mg,Cu)SO4·7H2O P 21/c 2/m
- VI/C.06-10 Melanterite FeSO4·7(H2O) P 21/c 2/m
- VI/C.06-20 Mallardite MnSO4·7(H2O) P 21/c 2/m
- VI/C.06-30 Bieberite CoSO4·7(H2O) P 21/c 2/m
- VI/C.06-40 Boothite CuSO4·7(H2O) P 21/c 2/m
- VI/C.06-50 Zinc-melanterite (Zn,Cu,Fe)SO4·7(H2O) P 21/c 2/m
General Mallardite Information |
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 Chemical Formula: |
Mn++SO4·7(H2O) | ||
| Composition: |
Molecular Weight = 277.11 gm | ||
| Manganese 19.83 % Mn 25.60 % MnO | |||
| Hydrogen 5.09 % H 45.51 % H2O | |||
| Sulfur 11.57 % S 28.89 % SO3 | |||
| Oxygen 63.51 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mn2+(SO4)·7(H2O) | ||
| IMA Status: |
Valid Species (Pre-IMA) 1879 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
Search for Mallardite Images | |||
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Images:
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Mallardite Crystallography |
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| Axial Ratios: |
a:b:c =2.1769:1:1.7015 | ||
| Cell Dimensions: |
a = 14.15, b = 6.5, c = 11.06, Z = 4; beta = 105.6° V = 979.77 Den(Calc)= 1.88 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 4.92(1), 5.49(0.7), 4.88(0.55), | ||
Physical Properties of Mallardite |
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| Cleavage: |
[001] Good | ||
| Color: |
Colorless, White, Light pink. | ||
| Density: |
1.846 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Massive - Fibrous - Distinctly fibrous fine-grained forms. | ||
| Hardness: |
2 - Gypsum | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Vitreous (Glassy) | ||
| Magnetism: |
Nonmagnetic | ||
| Streak: |
white | ||
Optical Properties of Mallardite |
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| Gladstone-Dale: |
CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2484,KPDmeas= 0.253,KC= 0.2563 |
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| Optical Data: |
Biaxial (+), a=1.462, b=1.465, g=1.474, bire=0.0120 | ||
Calculated Properties of Mallardite |
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| Electron Density: |
relectron=1.91 gm/cc |
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| Fermion Index |
Fermion Index = 0.00118 Boson Index = 0.99882 |
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| Photoelectric: |
PEMallardite = 5.59 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mallardite is Not Radioactive |
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Mallardite Classification |
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| Dana Class: |
29.6.10.5 (29)Hydrated Acid and Sulfates | ||
| (29.6)where A XO4 · x(H2O) | |||
| (29.6.10)Melanterite Group (Heptahydrates, Monoclinic: P21/c) | |||
| Strunz Class: |
VI/C.06-20 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size | |||
| VI/C.06 - Melanterite group | |||
Other Mallardite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Mallardite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Mallardite using: Visit our Advertisers for Mallardite : Translate Mallardite Mineral Data : Ask about Mallardite here : Print or Cut-and-Paste your Mallardite Specimen Label here :
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