Mohrite Mineral Data + 
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- 29.3.7.1 Mohrite (NH4)2Fe(SO4)2·6(H2O) P 21/c 2/m
- 29.3.7.2 Boussingaultite (NH4)2Mg(SO4)2·6(H2O) P 21/a 2/m
- 29.3.7.3 Nickel-boussingaultite (NH4)2(Ni,Mg)(SO4)2·6(H2O) P 21/a 2/m
- VI/C.19-10 Picromerite K2Mg(SO4)2·6(H2O) P 21/a 2/m
- VI/C.19-20 Cyanochroite K2Cu(SO4)2·6(H2O) P 21/a 2/m
- VI/C.19-30 Boussingaultite (NH4)2Mg(SO4)2·6(H2O) P 21/a 2/m
- VI/C.19-40 Nickel-boussingaultite (NH4)2(Ni,Mg)(SO4)2·6(H2O) P 21/a 2/m
- VI/C.19-50 Mohrite (NH4)2Fe(SO4)2·6(H2O) P 21/c 2/m
General Mohrite Information |
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 Chemical Formula: |
(NH4)2Fe++(SO4)2·6(H2O) | ||
| Composition: |
Molecular Weight = 392.14 gm | ||
| Iron 14.24 % Fe 18.32 % FeO | |||
| Hydrogen 2.06 % H - % Calc as (NH4)2O | |||
| Hydrogen 3.08 % H 27.56 % H2O | |||
| Sulfur 16.35 % S 40.83 % SO3 | |||
| Nitrogen 7.14 % N 13.28 % (NH4)2O | |||
| Oxygen 57.12 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
(NH4)2Fe2+(SO4)2·6(H2O) | ||
| IMA Status: |
Approved IMA 1964 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 65669 | ||
| Mohr's salt | |||
| PDF 35-764 | |||
Mohrite Image | |||
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Images:
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Mohrite Crystallography |
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| Axial Ratios: |
a:b:c =0.4944:1:0.7367 | ||
| Cell Dimensions: |
a = 6.237, b = 12.613, c = 9.292, Z = 2; beta = 106.883° V = 699.47 Den(Calc)= 1.86 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 4.2(1), 3.79(0.55), 4.13(0.55), | ||
Physical Properties of Mohrite |
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| Cleavage: |
[102] Perfect, [010] Distinct | ||
| Color: |
Light green. | ||
| Density: |
1.8 - 1.862, Average = 1.83 | ||
| Diaphaniety: |
Transparent | ||
| Hardness: |
2-2.5 - Gypsum-Finger Nail | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Mohrite |
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| Gladstone-Dale: |
CI meas= -0.328 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.307 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.262,KPDmeas= 0.2661,KC= 0.2004 |
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| Optical Data: |
Biaxial (+), a=1.48-1.486, g=1.486-1.497, bire=0.0060-0.0110, 2V(Meas)=75. | ||
Calculated Properties of Mohrite |
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| Electron Density: |
relectron=1.94 gm/cc |
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| Fermion Index |
Fermion Index = 0.0757 Boson Index = 0.9243 |
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| Photoelectric: |
PEMohrite = 5.07 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mohrite is Not Radioactive |
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Mohrite Classification |
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| Dana Class: |
29.3.7.1 (29)Hydrated Acid and Sulfates | ||
| (29.3)where (A+)2 B (XO4)2 · x(H2O) | |||
| (29.3.7)Dana Group | |||
| Strunz Class: |
VI/C.19-50 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium and very big size | |||
| VI/C.19 - Picromerite group | |||
Other Mohrite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Mohrite : 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 Mohrite using: Visit our Advertisers for Mohrite : Translate Mohrite Mineral Data : Ask about Mohrite here : Print or Cut-and-Paste your Mohrite Specimen Label here :
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