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Schwertmannite

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Formula:
Fe
3+
16
(OH,SO
 
4
)
 
12-13
O
 
16
· 10-12H
 
2
O
System:TetragonalColour:brownish yellow
Lustre:EarthyHardness:1 - 2
Name:Originally named glockerite in 1855 by Karl Friedrich Naumann in honor of Ernst Friedrich Glocker [May 1, 1783 Stuttgart, Germany - July 18, 1858), professor of mineralogy at University of Breslau (University of Vratislav; Wroclaw, Poland) and author of numerous systematic mineralogical works. Renamed by J. M. Bigham, L. Carlson, E. Murad, in 1994 in honor of Udo Schwertmann (1922 - ), soil scientist at the University of München (Munich), Germany.
This page provides mineralogical data about Schwertmannite.

Classification of Schwertmannite

IMA status:Approved 1990
Strunz 8th edition ID:4/F.06-55
Nickel-Strunz 10th (pending) edition ID:7.DE.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
Dana 8th edition ID:6.4.10.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
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Type Occurrence of Schwertmannite

Type Locality:Pyhäsalmi Mine, Pyhäjärvi, Northern Finland Region, Finland
Year of Discovery:1990

Physical Properties of Schwertmannite

Lustre:Earthy
Diaphaneity (Transparency):Opaque
Colour:brownish yellow
Streak:yellow
Hardness (Mohs):1 - 2

Crystallography of Schwertmannite

Crystal System:Tetragonal
Cell Parameters:a = 10.66Å, c = 6.04Å
Ratio:a:c = 1 : 0.567
Unit Cell Volume:V 686.36 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
4.86 (37)
3.39 (46)
2.55 (100)
2.28 (23)
1.66 (21)
1.51 (24)
1.46 (18)
Comments:Broad peaks

Chemical Properties of Schwertmannite

Formula:
Fe
3+
16
(OH,SO
 
4
)
 
12-13
O
 
16
· 10-12H
 
2
O
Simplified for copy/paste:Fe3+16(OH,SO4)12-13O16·10-12H2O
Essential elements:Fe, H, O
All elements listed in formula:Fe, H, O, S

Relationship of Schwertmannite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.DE.05Mangazeite
Al
 
2
(SO
 
4
)(OH)
 
4
· 3H
 
2
O
7.DE.10Carbonatecyanotrichite
Cu
 
4
Al
 
2
(CO
 
3
,SO
 
4
)(OH)
 
12
· 2H
 
2
O
7.DE.10Cyanotrichite
Cu
 
4
Al
 
2
(SO
 
4
)(OH)
 
12
· 2H
 
2
O
7.DE.10UKI-1975-(SO:AlCu)
(Cu, Al, SO
 
4
, H
 
2
O)
7.DE.20Tlalocite
Cu
 
10
Zn
 
6
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)(OH)
 
25
Cl · 27H
 
2
O
7.DE.25Utahite
Cu
 
5
Zn
 
3
(TeO
 
4
)
 
4
(OH)
 
8
· 7H
 
2
O
7.DE.35Coquandite
(SbO)
 
6
(SO
 
4
)O
 
2
· H
 
2
O
7.DE.40Osakaite
Zn
 
4
(SO
 
4
)(OH)
 
6
· 5H
 
2
O
7.DE.45Wilcoxite
MgAl(SO
 
4
)
 
2
F · 17H
 
2
O
7.DE.50Stanleyite
(V
4+
 
O)(SO
 
4
) · 6H
 
2
O
7.DE.55Mcalpineite
Cu
 
3
(Te
6+
 
O
 
6
) · H
 
2
O
7.DE.60Hydrobasaluminite
Al
 
4
(SO
 
4
)(OH)
 
10
· 12-36H
 
2
O
7.DE.62Volaschioite
Fe
 
4
(SO
 
4
)O
 
2
(OH)
 
6
· 2H
 
2
O
7.DE.65Zaherite
Al
 
12
(SO
 
4
)
 
5
(OH)
 
26
· 20H
 
2
O
7.DE.70Lautenthalite
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DE.75Camerolaite
Cu
 
4
Al
 
2
(HSbO
 
4
,SO
 
4
)(CO
 
3
)(OH)
 
10
· 2H
 
2
O

Other Names for Schwertmannite

Synonyms:
IMA1990-006
Other Languages:
German:Schwertmannit
Spanish:Schwertmannita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Schwertmannite

Reference List:

- +
Bigham, J. M., Carlson, L., Murad, E. (1994) Schwertmannite, a new iron oxyhydroxysulfate from Pyhasalmi, Finland, and other localities. Mineralogical Magazine, 58, 641-664.
European Journal of Mineralogy (1995): 7: 547-552.

Lapis (1996): 21(5): 33-34.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Schwertmannite

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  • Look for Schwertmannite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Schwertmannite details from Handbook of Mineralogy (PDF)
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  • Localities for Schwertmannite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Canada
     
    • British Columbia
      • Stikine Mining Division
        • Whitewater Mountains
          • Mount Eaton
    Gunnar Farber
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mtns (Erzgebirge)
          • Jáchymov District (St Joachimsthal)
    Lapis 2002(7/8), 63-65
    • Moravia (Mähren; Maehren)
      • Olomouc Region
    Petr Paulis (2001): Die interessanten mineralogische Fundstellen in Mahren und Schlesien; Kuttna, Kutná Hora p69-73
    Pauliš, P.: Die interessanten mineralogische Fundstellen in Mähren und Schlesien. Kutná Hora: Kuttna, 2001.
    Finland
     
    • Northern Finland Region
      • Pyhäjärvi
    Min.Mag.(1994) 58, 641-648
    Germany
     
    • Thuringia
      • Saalfeld
        • Garnsdorf
    XRD analysis (T. Witzke)
      • Thuringian Forest
        • Schmiedefeld
    Ullrich, B. & Ullrich, B. (2010): Der Aufschluss 61, 75-79.
    Greenland
     
    • Avanna Province (North Greenland)
      • Saviksoah Peninsula
    T. P. Pedersen, SCHWERTMANNITE AND AWARUITE AS ALTERATION PRODUCTS IN IRON METEORITES. 62nd Annual Meteoritical Society Meeting
    Hungary
     
    • Heves Co.
      • Mátra Mtns
        • Gyöngyösoroszi
    Király,ELTE,2008; Farkas, I. M. & Weiszburg, T. G. (2009): Mitt. Österr. Mineral. Ges. 155, 57. (Abs.)
        • Mátraszentimre
    Király,ELTE,2008
    • Pest Co.
      • Börzsöny Mtns
    Collection of NHM, Vienna
    Italy
     
    • Liguria
      • Genova Province
        • Sestri Levante
    Carbone, C. (2005): Seminar on “Minerali di neo-formazione nei processi di acid-rock drainage”. Genova, Italy, 17/01/2005.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Gunma Prefecture
    Nakamura & Akai (1999) Koubutsu-Gakkai Kou’en-Youshi, 131
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Kaczawskie Mts
        • Radzimowice
          • Stara Góra
    Siuda, R.: Minerały siarczanowe ze Starej Góry. Otoczak, 2004, nr. 31, p. 52-57.
    1. R. Siuda, 2001 : New sulphate minerals from the Stara Góra oxidised zone, Radzimowice, Kaczawskie Mts., Mineralogical Society of Poland, Special Papers, vol 18, 186-188
    Slovakia
     
    • Banská Bystrica Region
      • Banská Bystrica Co.
    Pauliš P., Ďuďa R., 2002: Nejzajimavejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 134p.
    Ďuďa R.,Kotuľak P., Káňa R., 1993: Bergbau und Mineralien von Banská Štiavnica (Schemnitz), Slowakei. Emser Hefte, 14, 3, 1-70, Haltern
      • Žiar nad Hronom Co.
    Ďuďa R., 1993 : Die mineralien der Gold und Silber - lagersttäte von Kremnitz ( Kremnica) in der Slowakei. Mineralien Welt /Haltern,Nemecko/,5, s. 20 - 32
    • Bratislava Region
      • Pezinok Co.
    - Trtíková S., Kušnierová M. Chovan, M., 1999: Precipitation and chemical composition of iron ochres in the pyrite and stibnite deposits in The Malé Karpaty Mts. Slov. Geol. Magaz. 5, 3, 179-186. - Trtíková S., 2001: Nové sekundárne minerály pyritových a Sb-Au ložísk okolia Pezinka. Minerál, 9, 1, 21-22. (in Slovak)
    • Košice Region
      • Spišská Nová Ves Co.
    Ďuďa R., Peterec D., 1995 : Die Mineralien der siderit - baryt lagersttäte von Rudňany ( Kotterbach ) in der Slowakei. Mineralien Welt /Haltern/, 1, s.20 - 31
    • Prešov Region
      • Prešov Co.
        • Červenica
          • Dubník
    Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    Duda et. all.,1981:Minerály severnej časti Slanských vrchov. Min.Slovca,Monografia 2,Bratislava, 98 p
    Taiwan
     
    • Taiwan Province
      • Taipei Co.
        • Jui-Fang Town
    James Huang
    USA
     
    • Alabama
      • De Kalb Co.
    T. P. Pedersen, SCHWERTMANNITE AND AWARUITE AS ALTERATION PRODUCTS IN IRON METEORITES. 62nd Annual Meteoritical Society Meeting
    • Colorado
      • San Juan Co.
    Desborough, G. A., Smith, K. S., Lowers, H. A., Swayze, G. A., Hammarstrom, J. M., Diehl, S. F., Leinz, R. W. and Driscoll, R. L. (2010): Mineralogical and chemical characteristics of some natural jarosites. Geochimica et Cosmochimica Acta, 74, 1041-1056.
    • Massachusetts
      • Franklin Co.
        • Rowe
    Cerato, Amy (2003): Mineralogical Study of Davis Mine, Rowe, MA, Using X-Ray Diffraction Techniques.
    • North Carolina
      • Swain Co.
    Hammarstrom,Jane M. Meier,Allen L. Seal II,Robert R. and Jackson,John C.(2003)Weathering of Sulfidic Shale and Copper Mine Waste:Secondary Minerals and Metal Cycling in Great Smoky Mountains National Park,Tennessee,and North Carolina,USA,U.S Geological Survey
        • Swain County Copper District (Fontana District)
    Hammarstrum,Jane M. Meier,Allen L. Seal II,Robert R. and Jackson,John C.(2003)Weathering of Sulfidic Shale and Copper Mine Waste:Secondary Minerals and Metal Cycling in Great Smoky Mountains National Park,Tennessee and North Carolina,USA, U.S Geological Survey
    • Pennsylvania
      • Centre Co.
        • State College
          • Skytop
    U.S. Geological Survey/ U.s. Department of the Interior
    • Tennessee
      • Sevier Co.
        • Great Smoky Mts
    Coskren, T. D. & Lauf, R. J. (2000): The Minerals of Alum Cave Bluff, Great Smoky Mountains, Tennessee. Mineralogical Record, 31, 163-175.
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