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Schwertmannite

Big Photo

Jeremias Glück Mine (Fairy Grotto; Feengrotte), Garnsdorf, Saalfeld, Thuringia, Germany
© Thomas Witzke

Show Schwertmannite Photos (2)
Formula:
Fe
3+
16
O
 
16
(OH,SO
 
4
)
 
12-13
 · 10-12H
 
2
O
System:TetragonalColour:brownish yellow
Lustre:EarthyHardness:1 - 2
Name:For Udo Schwertmann (1922 - )
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, Oulun (Oulu) Lääni, Finland
Year of Discovery:1994

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)
Comments:Broad peaks

Chemical Properties of Schwertmannite

Formula:
Fe
3+
16
O
 
16
(OH,SO
 
4
)
 
12-13
 · 10-12H
 
2
O
Essential elements:Fe, H, O, S
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
[(OH)
 
4
|SO
 
4
] · 3H
 
2
O
7.DE.10Carbonatecyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|(CO
 
3
,SO
 
4
)] · 2H
 
2
O
7.DE.10Cyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|SO
 
4
] · 2H
 
2
O
7.DE.10UKI-1975-(SO:AlCu)
Cu, Al, SO4, H2O
7.DE.20Tlalocite
Cu
 
10
Zn
 
6
(TeO
 
3
)(TeO
 
4
)
 
2
Cl(OH)
 
25
·27H
 
2
O
7.DE.25Utahite
Cu
 
5
Zn
 
3
[(OH)
 
2
|TeO
 
4
]
 
4
 · 7H
 
2
O
7.DE.35Coquandite
Sb
 
6
[O
 
8
|SO
 
4
] · H
 
2
O
7.DE.40Osakaite
Zn
 
4
(SO
 
4
)(OH)
 
6
 ·5H
 
2
O
7.DE.45Wilcoxite
MgAl[F|(SO
 
4
)
 
2
] · 18H
 
2
O
7.DE.50Stanleyite
(V
4+
 
O)[SO
 
4
] · 6H
 
2
O
7.DE.55Mcalpineite
Cu
 
3
[TeO
 
6
] · H
 
2
O
7.DE.60Hydrobasaluminite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 12-36H
 
2
O
7.DE.65Zaherite
Al
 
12
[(OH)
 
26
|(SO
 
4
)
 
5
] · 20H
 
2
O
7.DE.70Lautenthalite
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
·3H
 
2
O
7.DE.75Camerolaite
Cu
 
4
Al
 
2
[(OH)
 
10
|CO
 
3
|(HSbO
 
4
,SO
 
4
)] · 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:European Journal of Mineralogy (1995): 7: 547-552.

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

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

Mineralogical Magazine: 58: 641-648.

Internet Links for Schwertmannite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Schwertmannite in the Natural History Museum (London) online catalogue
  • Schwertmannite details from Handbook of Mineralogy (PDF)
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    Localities for Schwertmannite

    Hide Locality List
    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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
    		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
     
    • Oulun (Oulu) Lääni
      • Pyhäjärvi
    		Min.Mag.(1994) 58, 641-648
    Germany
     
    • Thuringia
      • Saalfeld
        • Garnsdorf
    		XRD analysis (T. Witzke)
    Greenland
     
    • Avanna (North Greenland) Province
      • Saviksoah Peninsula
    		T. P. Pedersen, SCHWERTMANNITE AND AWARUITE AS ALTERATION PRODUCTS IN IRON METEORITES. 62nd Annual Meteoritical Society Meeting
    Hungary
     
    • Heves Co.
      • Mátra Mts.
        • 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 Mts.
    		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
    		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
    Siuda, R.: Minerały siarczanowe ze Starej Góry. Otoczak, 2004, nr. 31, p. 52-57.
    Slovakia
     
    • Banská Bystrica Region
      • Kremnica Mts
    		Ďuďa R., 1993 : Die mineralien der Gold und Silber - lagersttäte von Kremnitz ( Kremnica) in der Slowakei. Mineralien Welt /Haltern,Nemecko/,5, s. 20 - 32
      • Starohorské Mts
        • Špania Dolina ore belt
    		Pauliš P., Ďuďa R., 2002: Nejzajimavejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 134p.
      • Štiavnica Mts
    		Ďuďa R.,Kotuľak P., Káňa R., 1993: Bergbau und Mineralien von Banská Štiavnica (Schemnitz), Slowakei. Emser Hefte, 14, 3, 1-70, Haltern
    • Bratislava Region
      • Malé Karpaty Mts
    		Pauliš,P.,Ďuďa,R.,2002: Nejzajímavejší mineralogická naletište Slovenska. Kuttna,K.Hora, 136p
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
    		Ďuďa R., Peterec D., 1995 : Die Mineralien der siderit - baryt lagersttäte von Rudňany ( Kotterbach ) in der Slowakei. Mineralien Welt /Haltern/, 1, s.20 - 31
    Pauliš,P.,Ďuďa,R.,2002: Nejzajímavejší mineralogická naletište Slovenska. Kuttna,K.Hora, 136p
    • Prešov Region
      • Northern Slanské Mts
        • Červenica (Czerwenitza)
          • 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
    USA
     
    • Alabama
      • De Kalb Co.
    		T. P. Pedersen, SCHWERTMANNITE AND AWARUITE AS ALTERATION PRODUCTS IN IRON METEORITES. 62nd Annual Meteoritical Society Meeting
    • Pennsylvania
      • Centre Co.
        • Skytop
          • Bald Eagle Mountain
    		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.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 7th Nov 2009 11:39:28