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Glockerite

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About GlockeriteHide

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.


Physical Properties of GlockeriteHide

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.

Chemical Properties of GlockeriteHide

Formula:
Fe3+4(SO4)(OH)10·1-3H2O ?

Crystallography of GlockeriteHide

Morphology:
Stalactitic; incrusting; earthy. Minute, intertwined red fibers (Silesia).

Synonyms of GlockeriteHide

Other Language Names for GlockeriteHide

Other InformationHide

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 GlockeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Berzelius (1816) Afhandl. Fys. Kem. Min.: 5: 157 (as Vitriolocker).
Berzelius, J.J. (1819) Nouveau système de Minèralogie. Translated from the Swedish. 8vo, Paris (as Fer sous-sulfaté terreux).
Beudant, F.S. (1824), Traité élémentaire de Minéralogie, 8vo, Paris: 447 (as Pittizite).
Erdmann (1831) Journal für Chemie und Physik, Nuremberg: 62: 104.
Jordan (1836) Journal für praktische Chemie, Leipzig: 9: 95.
Naumann, C.F. (1855) Elemente der Mineralogie. Leipzig. 9 editions, 4th. ed.: 254 (as Glockerit).
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 970.
Church (1895) Mineralogical Magazine: 11: 13.
Greenly (1919) Memoires of the Geological Survey of Great Britain: 2: 832 (as Hydroglockerite).
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 80.
Eyerman cited in: Gordon, S.G. (1922) The Mineralogy of Pennsylvania. 255pp., Philadelphia.
Posnjak and Merwin (1922) Journal of the American Chemical Society: 44: 1965.
Hintze, Carl (1929) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [3B]: 4441.
Vertushkov (1940) Mem. Soc. russe min.: 69: 485.
Palache, C., Berman, H., & Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 587-588.

Internet Links for GlockeriteHide

Localities for GlockeriteHide

ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Qinghai Province
    • Huangnan Autonomous Prefecture
      • Tongren Co.
Jing Xue, Tagen Dai, and Chaozhuang Xi (2012): Acta Petrologica et Mineralogica 31(1), 28-38
Germany
 
  • Lower Saxony
    • Harz
      • Goslar
        • Rammelsberg
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 588.
Norway
 
  • Buskerud
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 588.
Sweden
 
  • Dalarna
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 588.
UK
 
  • Wales
    • Isle of Anglesey
      • Amlwch
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 588.
USA
 
  • Pennsylvania
    • Lancaster Co.
      • Bart Township
        • Gap
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 588.
    • Philadelphia Co.
      • Philadelphia
        • Fairmount Park
          • East Falls
Gordon, Mineralogy of Pennsyvania, 1922 - p. 224
Ref.: Gordon, S.G. (1922) "The Mineralogy of Pennsylvania," Special Publication No. 1, The Academy of Natural Sciences of Philadelphia: p. 125.
Mineral and/or Locality  
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