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General Krautite Information |
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 Chemical Formula: |
MnAs+++++O3(OH)2•(H2O) | ||
| Composition: |
Molecular Weight = 229.89 gm | ||
| Manganese 23.90 % Mn 30.86 % MnO | |||
| Arsenic 32.59 % As 49.99 % As2O5 | |||
| Hydrogen 1.75 % H 15.67 % H2O | |||
| Oxygen 41.76 % O | |||
| ______ ______ | |||
| 100.00 % 96.52 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mn2+AsO3(OH)2•(H2O) | ||
| Environment: |
Found on museum mineral specimens. | ||
| IMA Status: |
Approved IMA 1975 | ||
| Locality: |
Sacarimb (Nagyag) and Cavnic (Kapnikbanya), Romania. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Francois Kraut, mineralogist, Natural History Museum, Paris, France. | ||
| Name Pronunciation: |
Krautite  |
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| Synonym: |
ICSD 79619 | ||
| PDF 29-888 | |||
Krautite Image | |||
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Images:
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Krautite Crystallography |
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| Axial Ratios: |
a:b:c =0.5021:1:0.4261 | ||
| Cell Dimensions: |
a = 8.012, b = 15.956, c = 6.8, Z = 8; beta = 96.6° V = 863.55 Den(Calc)= 3.54 | ||
| Crystal System: |
Monoclinic - SphenoidalH-M Symbol (2) Space Group: P 21 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.273(1), 3.862(1), 7.96(1), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Krautite |
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| Cleavage: |
{010} Perfect, {101} Good, {101} Distinct | ||
| Color: |
Light pink. | ||
| Density: |
3.3 | ||
| Hardness: |
4 - Fluorite | ||
| Streak: |
white | ||
Optical Properties of Krautite |
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| Gladstone-Dale: |
CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.061 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1831,KPDmeas= 0.1965,KC= 0.1951 Ncalc = 1.64 - 1.69 |
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| Optical Data: |
Biaxial (+), a=1.62, b=1.639, g=1.686, bire=0.0660, 2V(Calc)=68, 2V(Meas)=65. | ||
Calculated Properties of Krautite |
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| Electron Density: |
Bulk Density (Electron Density)=3.16 gm/cc note: Specific Gravity of Krautite =3.30 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0002030688 Boson Index = 0.9997969312 |
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| Photoelectric: |
PEKrautite = 28.28 barns/electron U=PEKrautite x rElectron Density= 89.32 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Krautite is Not Radioactive |
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Krautite Classification |
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| Dana Class: |
39.01.03.01 (39)Hydrated Acid Phosphates, etc | ||
| (39.01)A+ [HXO4] · x(H2O) | |||
| (39.01.03)Dana Group | |||
| Strunz Class: |
08.CB.15 08 - PHOSPHATES, ARSENATES, VANADATES | ||
| 08.C - Phosphates without Additional Anions, with H2O | |||
| 08.CB -With only medium-sized cations, RO4:H2O = 1:1 | |||
Other Krautite Information |
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Krautite : 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 15 - WWW-MINCRYST Search for Krautite using: Visit our Advertisers for Krautite : A Bijoux Google Search for KrautiteAdam's Minerals Google Search for Krautite Cape Minerals Google Search for Krautite Dakota Matrix Minerals Google Search for Krautite Excalibur Mineral Corp. Google Search for Krautite Exceptional Minerals Google Search for Krautite John Betts Fine Minerals Search for Krautite McDougall Minerals Google Search for Krautite Mineral News Website Link Rock and Mineral Shows Google Search for Krautite Weinrich Minerals, Inc. Google Search for Krautite Ask about Krautite here : Print or Cut-and-Paste your Krautite Specimen Label here :
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