Manganhumite Subgroup
A group of related mineral species
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About Manganhumite Subgroup
Formula:
Mn2nSinO4n · Mn(OH,F)2, n = 2,3,4
Member of:
The manganhumite series constitutes a polysomatic series of minerals with the general formula Mn2nSinO4n•Mn(OH,F)2 for n = 2,3,4, where n designates the number of olivine layers between each norbergite M(OH,F)2 layer in the structure. There is very little chemical substitution in the olivine groups in the structure, but the exchange Mn <-> Mg may occur in environments rich in both Mn and Mg (Mn-rich dolomite skarns). No F-dominant species has been approved in the manganhumite series even though some analyses show F>OH
Note There is currently no official IMA nomenclature for the humite group.
Note There is currently no official IMA nomenclature for the humite group.
Unique Identifiers
Mindat ID:
46187
Long-form identifier:
mindat:1:1:46187:2
Chemistry of Manganhumite Subgroup
Mindat Formula:
Mn2nSinO4n · Mn(OH,F)2, n = 2,3,4
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| MnO | 55.653% % |
| MgO | 11.689% % |
| CaO | 1.057% % |
| FeO | 0.098% % |
| SiO2 | 28.447 % |
| Total: | 96.944 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Harstigen Mine, Pajsberg, Persberg ore district, Filipstad, Värmland County, Sweden | Microprobe. Mean of 40 points |
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014839 | Sonolite | Kato T, Ito Y, Hashimoto N (1989) The crystal structures of sonolite and jerrygibbsite Neues Jahrbuch fur Mineralogie, Monatshefte 1989 410-430 | 1989 | Hokkejino mine, Kyoto Prefecture, Honshu, Japan | 0 | 293 | |
| 0000968 | Alleghanyite | Francis C A (1985) Crystal structure refinement of magnesian alleghanyite American Mineralogist 70 182-185 |  | 1985 | Sterling mine, Ogdensburg, New Jersey, USA | 0 | 293 |
| 0000686 | Manganhumite | Francis C A, Ribbe P H (1978) Crystal structures of the humite minerals: V. Magnesian manganhumite American Mineralogist 63 874-877 | | 1978 | 0 | 293 |
CIF Raw Data - click here to close
Geological Environment
Geological Setting:
The Mn-humites are almost exclusively found associated with Mn-ores, either hydrothermal deposits or in metamorphosed ores associated with carbonate rocks and/or skarns (calc-silicate rocks).
Synonyms of Manganhumite Subgroup
Relationship of Manganhumite Subgroup to other Species
Member of:
Other Members of Humite Group:
| Chegemite Subgroup | Ca2nSinO4n · Ca(OH,F)2, n = 2,3,4 | |
| Humite Subgroup | n[Mg2(SiO4)] · Mg(OH,F)2 with n = 1, 2, 3, or 4 | |
| Leucophoenicite Subgroup | The leucophoenicite Subgroup minerals are unit cell-twinned polymorphs of the corresponding humite-group minerals. | |
| 'Unnamed (Ca-analogue of Humite)' | Ca7(SiO4)4F2 | Orth. mmm(2/m2/m2/m) |
Manganhumite Subgroup Members:
| Alleghanyite | Mn2+5(SiO4)2(OH)2 | Mon. 2/m : P21/b |
| Manganhumite | Mn2+7(SiO4)3(OH)2 | Orth. mmm(2/m2/m2/m) |
| Sonolite | Mn2+9(SiO4)4(OH)2 | Mon. 2/m : P21/b |
Minerals structurally related to group:
| Chegemite Subgroup | Ca2nSinO4n · Ca(OH,F)2, n = 2,3,4 | |
| Humite Subgroup | n[Mg2(SiO4)] · Mg(OH,F)2 with n = 1, 2, 3, or 4 | |
| Leucophoenicite Subgroup | The leucophoenicite Subgroup minerals are unit cell-twinned polymorphs of the corresponding humite-group minerals. |
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.
Manganhumite Subgroup in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Manganhumite Subgroup
mindat.org URL:
https://www.mindat.org/min-46187.html
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References for Manganhumite Subgroup
Reference List:
Localities for Manganhumite Subgroup
Showing 192 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Sterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA