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Glockerite
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Formula:
Fe3+4(SO4)(OH)10 · 1-3H2O ?
Colour:
Brown, ocher-yellow, brown-black, black, dull green
Lustre:
Resinous, Dull, Earthy
Name:
Named in 1855 by Karl Friedrich Naumann in honor of Ernst Friedrich Glocker [May 1, 1783, Stuttgart, Germany - July 18, 1858, Stuttgart, Germany], professor of mineralogy at University of Breslau (University of Vratislav; Wroclaw, Poland). Renamed schwertmannite in 1994.
A hydrated basic sulphate of ferric iron. Ill-defined with analyses that vary widely. May best be regarded as an impure, hardened gel-mass of indefinite composition. Results from the oxidation of iron sulphides.
Unique Identifiers
Mindat ID:
18999
Long-form identifier:
mindat:1:1:18999:6
Physical Properties of Glockerite
Resinous, Dull, Earthy
Transparency:
Translucent, Opaque
Colour:
Brown, ocher-yellow, brown-black, black, dull green
Streak:
Ocher-yellow to brown
Fracture:
Irregular/Uneven, Conchoidal
Comment:
Variable, low.
Chemistry of Glockerite
Mindat Formula:
Fe3+4(SO4)(OH)10 · 1-3H2O ?
Element Weights:
Elements listed:
Crystallography of Glockerite
Morphology:
Stalactitic; incrusting; earthy. Minute, intertwined red fibers (Silesia).
Synonyms of Glockerite
Other Language Names for Glockerite
French:Fer sous-sulfaté terreux
German:Glockerit
Vitriolocker
Vitriolocker
Simplified Chinese:纤水绿矾
Swedish:Vitriolocker
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 Glockerite
mindat.org URL:
https://www.mindat.org/min-18999.html
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References for Glockerite
Reference List:
Berzelius, J. J. (1819) Nouveau Système de minéralogie. Méquignon-Marvis.as Fer sous-sulfaté terreux
Church, A. H. (1895) A Basic Ferric Sulphate, from Parys Mount, Anglesey. Mineralogical Magazine and Journal of the Mineralogical Society, 11 (49) 13-14 doi:10.1180/minmag.1895.011.49.02
Larsen, Esper S. (1921) The microscopic determination of the nonopaque minerals. Bulletin 679. US Geological Survey doi:10.3133/b679 p.80
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia
Localities for Glockerite
symbol to view information about a locality.
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.
China | |
| Jing Xue et al. (2012) |
Czech Republic | |
| Fojt et al. (1994) |
Germany | |
| Palache et al. (1951) |
Norway | |
| Palache et al. (1951) |
Sweden | |
| Palache et al. (1951) |
UK | |
| Palache et al. (1951) |
USA | |
| Palache et al. (1951) |
| Gordon |
| Gordon (1922) |
