Manganhumite
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About Manganhumite
Formula:
(Mn2+,Mg)7(SiO4)3(OH)2
Hardness:
4
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1978 by Paul Brian Moore for its chemical composition as the Mn-dominant member of the group and relationship to humite, which was named after Sir Abraham Hume [February 20, 1749 London, England, UK – March 24, 1838 Wormley Bury. England. UK], English connoisseur and collector of gems, minerals and artwork.
Type Locality:
Isostructural with:
Classification of Manganhumite
Approved
Approval Year:
1969
8/B.04-80
9.AF.50
9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
52.3.2c.3
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
14.18.12
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
Physical Properties of Manganhumite
Hardness:
4 on Mohs scale
Optical Data of Manganhumite
Type:
Biaxial (+)
RI values:
nα = 1.707 nβ = 1.712 nγ = 1.723
2V:
Measured: 37° , Calculated: 70°
Max Birefringence:
δ = 0.016

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v weak
Chemical Properties of Manganhumite
Formula:
(Mn2+,Mg)7(SiO4)3(OH)2
IMA Formula:
Mn2+7(SiO4)3(OH)2
Common Impurities:
Ti,Al,Fe,Ca,F,H20,P
Crystallography of Manganhumite
Crystal System:
Orthorhombic
Cell Parameters:
a = 10.54 Å, b = 21.45 Å, c = 4.82 Å
Ratio:
a:b:c = 0.491 : 1 : 0.225
Unit Cell V:
1,089.72 ų (Calculated from Unit Cell)
Type Occurrence of Manganhumite
Synonyms of Manganhumite
Other Language Names for Manganhumite
Relationship of Manganhumite to other Species
Member of:
Other Members of this group:
Alleghanyite | Mn2+5(SiO4)2(OH)2 | Mon. 2/m : P21/b |
Sonolite | Mn2+9(SiO4)4(OH)2 | Mon. |
Related Minerals - Nickel-Strunz Grouping
9.AF. | Barwoodite | Mn2+6Nb5+(SiO4)2O3(OH)3 | Trig. 3 : P3 |
9.AF.05 | Sillimanite | Al2(SiO4)O | Orth. mmm (2/m 2/m 2/m) |
9.AF.10 | Andalusite | Al2(SiO4)O | Orth. mmm (2/m 2/m 2/m) : Pnnm |
9.AF.10 | Kanonaite | Mn3+Al(SiO4)O | Orth. mmm (2/m 2/m 2/m) : Pnnm |
9.AF.15 | Kyanite | Al2(SiO4)O | Tric. 1 : P1 |
9.AF.20 | Mullite | Al4+2xSi2-2xO10-x | Orth. mmm (2/m 2/m 2/m) : Pbam |
9.AF.20 | Krieselite | (Al,Ga)2(GeO4)(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
9.AF.23 | Boromullite | Al9BSi2O19 | Orth. mm2 : Cmc21 |
9.AF.25 | Yoderite | Mg(Al,Fe3+)3(SiO4)2O(OH) | Mon. 2/m : P21/m |
9.AF.30 | Magnesiostaurolite | Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4 | Mon. 2/m : B2/m |
9.AF.30 | Staurolite | Fe2+2Al9Si4O23(OH) | Mon. 2/m : B2/m |
9.AF.30 | Zincostaurolite | Zn2Al9Si4O23(OH) | Mon. 2/m : B2/m |
9.AF.35 | Topaz | Al2(SiO4)(F,OH)2 | Orth. mmm (2/m 2/m 2/m) |
9.AF.40 | Norbergite | Mg3(SiO4)(F,OH)2 | Orth. mmm (2/m 2/m 2/m) |
9.AF.45 | Alleghanyite | Mn2+5(SiO4)2(OH)2 | Mon. 2/m : P21/b |
9.AF.45 | Chondrodite | (Mg,Fe2+)5(SiO4)2(F,OH)2 | Mon. 2/m : P21/b |
9.AF.45 | Reinhardbraunsite | Ca5(SiO4)2(OH,F)2 | Mon. 2/m : P21/b |
9.AF.45 | Kumtyubeite | Ca5(SiO4)2F2 | Mon. 2/m : P21/b |
9.AF.45 | Hydroxylchondrodite | Mg5(SiO4)2(OH)2 | Mon. 2/m : P21/b |
9.AF.50 | Humite | (Mg,Fe2+)7(SiO4)3(F,OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
9.AF.50 | Unnamed (Ca-analogue of Humite) | Ca7(SiO4)4F2 | Orth. mmm (2/m 2/m 2/m) |
9.AF.55 | Clinohumite | Mg9(SiO4)4F2 | Mon. 2/m : P21/b |
9.AF.55 | Sonolite | Mn2+9(SiO4)4(OH)2 | Mon. |
9.AF.55 | Hydroxylclinohumite | Mg9(SiO4)4(OH)2 | Mon. 2/m |
9.AF.60 | Leucophoenicite | Mn2+7(SiO4)3(OH)2 | Mon. 2/m : P21/b |
9.AF.65 | Ribbeite | Mn2+5(SiO4)2(OH)2 | Orth. |
9.AF.70 | Jerrygibbsite | Mn2+9(SiO4)4(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
9.AF.75 | Franciscanite | Mn2+6(V5+,☐)2(SiO4)2(O,OH)6 | Hex. |
9.AF.75 | Örebroite | Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3 | Hex. |
9.AF.75 | Welinite | Mn2+6(W6+,Mg)2(SiO4)2(O,OH)6 | Trig. 3 : P3 |
9.AF.80 | Ellenbergerite | Mg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10 | Hex. |
9.AF.85 | Chloritoid | (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2 | Mon. 2/m : B2/b |
9.AF.85 | Magnesiochloritoid | MgAl2(SiO4)O(OH)2 | Mon. 2/m : B2/b |
9.AF.85 | Ottrélite | (Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2 | Mon. |
9.AF.90 | Poldervaartite | CaCa[SiO3(OH)](OH) | Orth. mmm (2/m 2/m 2/m) : Pbca |
9.AF.90 | Olmiite | CaMn2+[SiO3(OH)](OH) | Orth. mmm (2/m 2/m 2/m) : Pbca |
Related Minerals - Dana Grouping (8th Ed.)
52.3.2c.1 | Humite | (Mg,Fe2+)7(SiO4)3(F,OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
52.3.2c.2 | Leucophoenicite | Mn2+7(SiO4)3(OH)2 | Mon. 2/m : P21/b |
Related Minerals - Hey's Chemical Index of Minerals Grouping
14.18.1 | Nambulite | LiMn2+4Si5O14(OH) | Tric. |
14.18.2 | Natronambulite | (Na,Li)(Mn,Ca)4Si5O14OH | Tric. |
14.18.3 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O | Trig. |
14.18.4 | Norrishite | KLiMn3+2(Si4O10)O2 | Mon. 2/m : B2/m |
14.18.5 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O | Trig. |
14.18.6 | Abswurmbachite | CuMn3+6(SiO4)O8 | Tet. 4/mmm (4/m 2/m 2/m) : I41/acd |
14.18.7 | Donpeacorite | (Mn2+,Mg)Mg[SiO3]2 | Orth. |
14.18.8 | Kanoite | Mn2+(Mg,Mn2+)Si2O6 | Mon. 2/m : P21/b |
14.18.9 | Caryopilite | Mn2+3Si2O5(OH)4 | Mon. |
14.18.10 | Gonyerite | (Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8 | |
14.18.11 | Tirodite | ||
14.18.13 | Bustamite | CaMn2+(Si2O6) | Tric. 1 : P1 |
14.18.14 | Glaucochroite | CaMn2+SiO4 | Orth. mmm (2/m 2/m 2/m) |
14.18.15 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O | Trig. |
14.18.16 | Santaclaraite | CaMn4[Si5O14OH](OH) · H2O | Tric. |
14.18.17 | Ferrobustamite | CaFe2+(Si2O6) | Tric. |
14.18.18 | Johannsenite | CaMn2+Si2O6 | Mon. 2/m : B2/b |
14.18.19 | Neltnerite | CaMn3+6(SiO4)O8 | Tet. 4/mmm (4/m 2/m 2/m) : I41/acd |
14.18.20 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O | Hex. |
14.18.21 | Inesite | Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O | Tric. 1 : P1 |
14.18.22 | Orientite | Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O | Orth. |
14.18.23 | Ruizite | Ca2Mn3+2[Si4O11(OH)2](OH)2·2H2O | Mon. 2 |
14.18.24 | Bostwickite | CaMn6Si3O16 · 7H2O | Orth. |
14.18.25 | Kittatinnyite | Ca2Mn2Mn(SiO4)2(OH)4 · 9H2O | Hex. |
14.18.26 | Lithiomarsturite | LiCa2Mn2Si5O14(OH) | Tric. |
14.18.27 | Serandite | NaMn2+2Si3O8(OH) | Tric. 1 : P1 |
14.18.28 | Kvanefjeldite | Na4(Ca,Mn)(Si3O7)2(OH)2 | Orth. |
14.18.29 | Marsturite | NaCaMn3Si5O14(OH) | Tric. 1 : P1 |
14.18.30 | Raite | Na4Mn2+3Ti0.25Si8O20(OH)2 · 10H2O | Orth. 2 2 2 : C2 2 2 |
14.18.31 | Richterite | {Na}{NaCa}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
14.18.32 | Byelorussite-(Ce) | NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O | |
14.18.33 | Deerite | (Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5 | Mon. |
14.18.34 | Calderite | (Mn2+,Ca)3(Fe3+,Al)2(SiO4)3 | Iso. |
14.18.35 | Pyroxmangite | MnSiO3 | Tric. 1 |
14.18.36 | Dannemorite | ☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2 | |
14.18.37 | Neotocite | (Mn,Fe,Mg)SiO3 · H2O | Amor. |
14.18.38 | Babingtonite | Ca2(Fe,Mn)FeSi5O14(OH) | Tric. 1 : P1 |
14.18.39 | Manganbabingtonite | Ca2(Mn,Fe)FeSi5O14(OH) | Tric. |
14.18.40 | Örebroite | Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3 | Hex. |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Manganhumite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1978): 63: 874-877.
American Mineralogist (1979): 64: 243.
American Mineralogist (1985): 70: 379.
Internet Links for Manganhumite
mindat.org URL:
https://www.mindat.org/min-2470.html
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Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Manganhumite
Locality List




All localities listed without proper references should be considered as questionable.
China | |
| Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6 |
| Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6 |
| Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6 |
| Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6 |
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6 | |
Japan | |
| White & Hyde (1982) Physics and Chemistry of Minerals, 8, 167-174. |
Romania | |
| http://minerals-of-the-carpathians.eu |
Sweden | |
| Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. |
| No reference listed |
| Mineralogical Magazine(1978) 42, 133-136 |
Nysten, P. (1994): Alabandit och synadelfit, Nordmark. Långbansnytt. vol 10. [reprinted in: Långbansnytt. De första 20 åren 1983-2003. Långbansällskapet - Skrifter och rapporter. 2, 43] | |
USA | |
| Gunnar Färber |
| Dunn, P.J.: Am.Min.:70:379-387 (1985); Dunn(1995):Pt3:349. |
| Rocks & Min.: 60:130-135. |
| AmMin 88:740-747 (2003) |
Kitteln Mine, Nordmark Odal Field, Filipstad, Värmland County, Sweden