Humboldtine Group
A group of related mineral species
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About Humboldtine Group
Formula:
M2+(C2O4) · 2H2O
M = Fe, Mn, Mg, Zn, Ni
Several synthetic members are known (with M = Co, Ni, Zn).
Various space-group symmetries (monoclinic, orthorhombic and triclinic) have been reported for these M(II) oxalate dihydrates.
The natural members mainly crystallise in space group C2/c.
Various space-group symmetries (monoclinic, orthorhombic and triclinic) have been reported for these M(II) oxalate dihydrates.
The natural members mainly crystallise in space group C2/c.
Unique Identifiers
Mindat ID:
43258
Long-form identifier:
mindat:1:1:43258:8
Chemistry of Humboldtine Group
Mindat Formula:
M2+(C2O4) · 2H2O
M = Fe, Mn, Mg, Zn, Ni
M = Fe, Mn, Mg, Zn, Ni
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) |
|---|---|---|---|---|---|---|---|
| 0019940 | Humboldtine | Echigo T, Kimata M (2008) Single-crystal X-ray diffraction and spectroscopic studies on humboldtine and lindbergite: weak Jahn-Teller effect of Fe2+ ion Physics and Chemistry of Minerals 35 467-475 | 2008 | synthetic | 0 | 293 | |
| 0019963 | Lindbergite | Soleimannejad J, Aghabozorg H, Hooshmand S, Ghadermaz M, Gharamaleki J A (2007) The monoclinic polymorph of catena-poly [[diaquamanganese(II)]-mu-oxalato-4O1,O2:O1',O2'] Acta Crystallographica E63 m2389-m2390 | 2007 | synthetic | 0 | 293 | |
| 0019964 | Lindbergite | Deyrieux R, Berro C, Peneloux A (1973) Contribution a l'etude des oxalates de certains metaux bivalents. III. - Structure cristalline des oxalates dihydrates de manganese, de cobalt, de nickel et de zinc. Polymorphisme des oxalates dihydrates de cobalt et de nickel Bulletin de la Societe Chimique de France 1973 25-34 | 1973 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Humboldtine Group to other Species
Humboldtine Group Members:
| Andreybulakhite | Ni(C2O4) · 2H2O | Mon. 2/m : B2/b |
| Glushinskite | Mg(C2O4) · 2H2O | Mon. 2/m : B2/b |
| Humboldtine | Fe2+(C2O4) · 2H2O | Mon. 2/m |
| Katsarosite | Zn(C2O4) · 2H2O | Mon. 2/m : B2/b |
| Lindbergite | Mn2+(C2O4) · 2H2O | Mon. 2/m |
Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.
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.
Internet Links for Humboldtine Group
mindat.org URL:
https://www.mindat.org/min-43258.html
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References for Humboldtine Group
Localities for Humboldtine Group
Showing 65 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.
Csordakúti Mine, Bicske-Csordakút, Bicskei District, Fejér County, Hungary