General Manganhumite Information![]() (Mn,Mg)7(SiO4)3(OH)2 |
![]() Molecular Weight = 641.22 gm |
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Magnesium 6.63 % Mg 11.00 % MgO |
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Manganese 44.98 % Mn 58.08 % MnO |
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Silicon 13.14 % Si 28.11 % SiO2 |
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Hydrogen 0.31 % H 2.81 % H2O |
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Oxygen 34.93 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Mn2+5.25Mg1.75(SiO4)3(OH)2 |
![]() A late-stage skarn mineral formed in recrystallized limestone banded between layers of manganese ore minerals |
![]() Approved IMA 1978 |
![]() Brattfors mine, Nordmark, and at Langban, Varmland, Sweden. Link to MinDat.org Location Data. |
![]() Named for manganese in the composition and relation to humite. |
![]() Manganhumite + Pronunciation |
![]() ![]() ICSD 200351 |
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PDF 29-866 |
| | Search for Manganhumite Images
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| | Manganhumite Crystallography![]() a:b:c =0.4551:1:2.0272 |
![]() a = 4.815, b = 10.58, c = 21.448, Z = 4; V = 1,092.62 Den(Calc)= 3.90 |
![]() Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnm |
![]() By Intensity(I/Io): 1.7823(1), 3.393(0.89), 2.513(0.79), |
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| Physical Properties of Manganhumite![]() {010} Perfect |
![]() Brown, Brown orange, Light orange. |
![]() 3.83 |
![]() Transparent to Translucent |
![]() 4 - Fluorite |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Manganhumite![]() CI meas= 0.088 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.104 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1831,KPDmeas= 0.1864,KC= 0.2044 Ncalc = 1.78 - 1.8 ![]() Biaxial (+), a=1.707, b=1.712, g=1.723, bire=0.0160, 2V(Calc)=70, 2V(Meas)=37. |
| Calculated Properties of Manganhumite![]() Bulk Density (Electron Density)=3.68 gm/cc |
note: Specific Gravity of Manganhumite =3.83 gm/cc. ![]() Fermion Index = 0.01 |
Boson Index = 0.99 ![]() PEManganhumite = 12.22 barns/electron |
U=PEManganhumite x rElectron Density= 45.01 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Manganhumite is Not Radioactive | Manganhumite Classification![]() 52.03.02c.03 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O |
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(52.03)with cations in [6] coordination only |
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(52.03.02c)Humite group (Humite series) |
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![]() 09.AF.50 09 - SILICATES (Germanates) |
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09.A - Nesosilicates |
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09.AF -Nesosilicates with additional anions; |
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| Other Manganhumite Information![]() NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Manganhumite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - WWW-MINCRYST Search for Manganhumite using: Visit our Advertisers for Manganhumite : A Bijoux Google Search for ManganhumiteAdam's Minerals Google Search for Manganhumite Cape Minerals Google Search for Manganhumite Dakota Matrix Minerals Google Search for Manganhumite Excalibur Mineral Corp. Google Search for Manganhumite Exceptional Minerals Google Search for Manganhumite John Betts Fine Minerals Search for Manganhumite McDougall Minerals Google Search for Manganhumite Mineral News Website Link Rock and Mineral Shows Google Search for Manganhumite Weinrich Minerals, Inc. Google Search for Manganhumite Ask about Manganhumite here : Print or Cut-and-Paste your Manganhumite Specimen Label here :
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