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Sjögrenite

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Långban, Filipstad, Värmland, Sweden
© Kjell Gatedal

Show Sjögrenite Photos (6)
Formula:
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
System:HexagonalColour:White, yellowish green, ...
Lustre:Vitreous, Waxy, PearlyHardness:2½
Name:Named after Hjalmar Sjögren (1856-1922), Professor of Mineralogy, University of Stockholm, Sweden.


Manasseite Group.

Dimorphous with Pyroaurite with which it is often intergrown.

Classification of Sjögrenite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/E.01-80
Nickel-Strunz 10th (pending) edition ID:5.DA.45

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID:16b.6.1.3

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
Hey's CIM Ref.:11.13.3

11 : Carbonates
13 : Carbonates of Fe
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Type Occurrence of Sjögrenite

Type Locality:Långban, Filipstad, Värmland, Sweden

Physical Properties of Sjögrenite

Lustre:Vitreous, Waxy, Pearly
Diaphaneity (Transparency):Transparent
Colour:White, yellowish green, brownish green, yellowish white, brownish white
Hardness (Mohs):2½
Cleavage:Perfect
{0001}
Density (measured):2.08 - 2.14 g/cm3
Density (calculated):2.11 g/cm3

Crystallography of Sjögrenite

Crystal System:Hexagonal
Morphology:Thin plates {0001}, with a hexagonal outline and striated and indistinct lateral faces.

Optical Data of Sjögrenite

Type:Uniaxial (-)
RI values: nω = 1.573 nε = 1.550
Maximum Birefringence:δ = 0.023

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Sjögrenite

Formula:
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
Essential elements:C, Fe, H, Mg, O
All elements listed in formula:C, Fe, H, Mg, O

Relationship of Sjögrenite to other Species

Related Minerals - Nickel-Strunz Grouping):
5.DA.05Dypingite
Mg
 
5
[OH|(CO
 
3
)
 
2
]
 
2
 · 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 5H
 
2
O
5.DA.10Artinite
Mg
 
2
[(OH)
 
2
|CO
 
3
] · 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
[(CO
 
3
)
 
4
(OH)
 
2
] · 15H
 
2
O
5.DA.10Chlorartinite
[Mg
 
2
(CO
 
3
)(H
 
2
O)(OH)]Cl · H
 
2
O
5.DA.15Otwayite
Ni
 
2
CO
 
3
(OH)
 
2
·H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
·4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
·3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
[(OH)
 
6
|CO
 
3
] · 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
[(OH)
 
4
|CO
 
3
] · 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
·nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(OH)
 
13
CO
 
3
·5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
CO
 
3
H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.45Barbertonite
Mg
 
6
(Cr,Al)
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
[(OH)
 
13
|CO
 
3
] · 4H
 
2
O
5.DA.45Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
[(OH)
 
12
|(Cl
 
2
,CO
 
3
)] · 2H
 
2
O
5.DA.45Manasseite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
·3H
 
2
O
5.DA.50Comblainite
(Ni
 
x
,Co
 
1-x
)(OH)
 
2
(CO
 
3
)
 
(1-x)/2
·nH
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Stichtite
Mg
 
6
Cr
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
[(OH)
 
24
|CO
 
3
] · 2H
 
2
O
5.DA.60Karchevskyite
Related Minerals - Hey's Index Grouping:
11.13.1Siderite
FeCO
 
3
11.13.2Pyroaurite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
11.13.4Brugnatellite
Mg
 
6
Fe
3+
 
[(OH)
 
13
|CO
 
3
] · 4H
 
2
O
11.13.5Coalingite
Mg
 
10
Fe
3+
2
[(OH)
 
24
|CO
 
3
] · 2H
 
2
O
11.13.6Ankerite
Ca(Fe
2+
 
 ,Mg,Mn
2+
 
)(CO
 
3
)
 
2

Other Names for Sjögrenite

Synonyms:
Sjogrenite (of Frondel)
German names:
Sjögrenit
Russian names:
Шегренит
Spanish names:
Sjögrenita

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 Sjögrenite

Reference List:Aminoff and Broomé (1930), Svenska Vetenskapsakademien, Stockholm, Handlingar: 9: 3, no. 5: 23.

Frondel, C. (1941), Constitution and polymorphism of the pyroaurite and sjögrenite groups, American Mineralogist: 26: 295-315.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 659-660.

Neues Jahrbuch für Mineralogie, Monatshefte (1966): 161-181.

Mineralogical Magazine: 36: 465-479.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1983): 112: 617.

Internet Links for Sjögrenite

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  • Raman and XRD data at RRUFF project
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    Localities for Sjögrenite

    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.
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    (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.
    Australia
     
    • Tasmania
      • Huon district
        • Weld river
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
      • Trial Harbour district
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
      • Zeehan district
        • Mt Heemskirk mineral field
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Canada
     
    • Québec
      • Mégantic Co.
        • Coleraine Township
    		SABINA, A.P. (1967) Geological Survey of canada Paper, 66-51, 170p
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Oberviechtach
            • Winklarn
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Italy
     
    • Sardinia
      • Cagliari Province
        • Teulada
    		Conti L, Cozupoli D., Lombardi G, Traversa g. 1970 - Segnalazione di Sjögrenite nelle contattiti presso Teulada (Sardegna meridionale) Per. Min. Roma, vol. 39 A, (special volume), pp. 119-127
    Japan
     
    • Honshu Island
      • Chubu Region
        • Aichi prefecture
          • Shinshiro city
    Alfredo Petrov - unpublished document - 2007
    Kazakhstan
     
    • Kökshetaü Oblysy (Kokshatau [Kokchetav] Oblast')
      • Zlatogorska Village
        • Zlatogorsk ultramafic intrusion
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
            • Ightem
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Kovdor Massif
    		[World of Stones 95:5-6, p64]
    http://maurice.strahlen.org/kola/kovdor.htm
    Sweden
     
    • Värmland
      • Filipstad
    		Östra Värmlands Mineral Society,Långban,Sweden
    Progr.Abstr.Min.Soc.Amer.(1940) p. 6; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
    USA
     
    • California
      • Sonoma Co.
    		www.minresco.com/syst/s.htm
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    		Dunn, P.J. & Leavens, Min.Rec.:12:371-372: (1981); Dunn(1995):Pt4:625.
    Mineral and/or Locality
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