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Sverigeite

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Långban, Filipstad, Värmland, Sweden
© R.Kristiansen




Formula:
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
System:OrthorhombicColour:Yellow in transmitted ...
Hardness:6½
Name:Named for the country of origin, Sweden (Sverige).


Occurs as platy aggregates.

Classification of Sverigeite

IMA status:Approved 1983
Strunz 8th edition ID:8/F.38-10
Nickel-Strunz 10th (pending) edition ID:9.AE.15

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
Dana 7th edition ID:51.2.2.1
Dana 8th edition ID:51.2.2.1

51 : NESOSILICATES Insular SiO4 Groups Only
2 : Insular SiO4 Groups Only with cations in [4] as well as >[4]
Hey's CIM Ref.:14.3.21

14 : Silicates not Containing Aluminum
3 : Silicates of Be
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Type Occurrence of Sverigeite

Type Locality:Långban, Filipstad, Värmland, Sweden
Place of Conservation of Type Material:National Musuem of Natural History, Washington, D.C.
Year of Discovery:1984
Geological Setting of type material:Mine dump, possibly part of a vein assemblage

Physical Properties of Sverigeite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Yellow in transmitted light, pale yellow to yellow
Streak:Light yellow
Hardness (Mohs):6½
Cleavage:Perfect
Perfect on {010}, two other directions distinct
Density (measured):3.6 g/cm3
Density (calculated):3.61 g/cm3

Crystallography of Sverigeite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Imma {I2/m 2/m 2/a}
Cell Parameters:a = 10.81Å, b = 13.27Å, c = 6.81Å
Ratio:a:b:c = 0.815 : 1 : 0.513
Unit Cell Volume:V 976.89 ų (Calculated from Unit Cell)
Z:4
Morphology:In well-formed complex crystals, to 2 mm, elongated parallel to [001]; as irregular platy aggregates
X-Ray Powder Diffraction:
d-spacingIntensity
2.884 (100)
2.826 (90)
5.77 (70)
4.35 (70)
2.98 (60)
2.644 (60)
6.63 (50)
Comments:From type locality material

Optical Data of Sverigeite

Type:Biaxial (+)
RI values: nα = 1.678 nβ = 1.684 nγ = 1.699
2V:Measured: 65° to 69°, Calculated: 66°
Maximum Birefringence:δ = 0.021

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r < v strong
Pleochroism:Visible
Comments:Pleochroism moderate; X=yellow; Y~Z=pale yellow
Comments:Orientation: Z=b. Absorption: X>Y~Z

Chemical Properties of Sverigeite

Formula:
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
Essential elements:Be, H, Mg, Mn, Na, O, Si, Sn
All elements listed in formula:Be, H, Mg, Mn, Na, O, Si, Sn
Analytical Data:Based on electron microprobe; Be by AA, H2O by the Penfield method; corresponds to Na1.04(Mg1.06Mn0.88Zn0.08Fe0.02)Sn1.00Be2.06Si2.96O12.19H0.71
SiO2 (33.5)
SnO2 (28.5)
FeO (0.3)
MnO (11.8)
ZnO (1.2)
BeO (9.7)
MgO (8.1
Na2O (6.1)
H2O (1.2)
Common Impurities:Fe,Zn,H2O

Relationship of Sverigeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AE.05Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.AE.10Euclase
BeAl(SiO
 
4
)(OH)
9.AE.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
9.AE.25Gerstmannite
(Mg,Mn
2+
 
)Zn(SiO
 
4
)(OH)
 
2
9.AE.30Clinohedrite
CaZn(SiO
 
4
) · H
 
2
O
9.AE.35Stringhamite
CaCu(SiO
 
4
) · H
 
2
O
9.AE.40Katoptrite
(Mn
2+
 
,Mg)
 
13
(Al,Fe
3+
 
)
 
4
Sb
5+
2
(SiO
 
4
)
 
2
O
 
20
9.AE.45Yeatmanite
Zn
 
6
Mn
2+
9
Sb
5+
2
(SiO
 
4
)
 
4
O
 
12
9.AE.50Sphaerobertrandite
Be
 
3
(SiO
 
4
)(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
14.3.1Phenakite
Be
 
2
SiO
 
4
14.3.2Bertrandite
Be
 
4
(Si
 
2
O
 
7
)(OH)
 
2
14.3.3Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
 · H
 
2
O
14.3.4Liberite
Li
 
2
BeSiO
 
4
14.3.5Chkalovite
Na
 
2
BeSi
 
2
O
 
6
14.3.6Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
 · H
 
2
O
14.3.7Epididymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
 · H
 
2
O
14.3.8Gugiaite
Ca
 
2
Be(Si
 
2
O
 
7
)
14.3.9Jeffreyite
(Ca,Na)
 
2
(Be,Al)(Si
 
2
O
 
7
,HSi
 
2
O
 
7
)
14.3.10Semenovite-(Ce)
Na
 
8
Ca
 
2
FeBe
 
6
Ce
 
2
Si
 
14
O
 
40
(OH)
 
4
F
 
4
14.3.11Barylite
Be
 
2
Ba(Si
 
2
O
 
7
)
14.3.12Hingganite-(Ce)
(Ce,REE)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.13Hingganite-(Yb)
(Yb,Y,REE)
 
2
□Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.14Hingganite-(Y)
(Y,REE,Ca)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.15Minasgeraisite-(Y)
CaBe
 
2
Y
 
2
Si
 
2
O
 
10
14.3.16Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
14.3.17Trimerite
CaMn
2+
2
Be
 
3
(SiO
 
4
)
 
3
14.3.18Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
 · 2H
 
2
O
14.3.19Tvedalite
(Ca,Mn)
 
4
Be
 
3
Si
 
6
O
 
17
(OH)
 
4
 · 3H
 
2
O
14.3.20Harstigite
Ca
 
6
(Mn,Mg)Be
 
4
Si
 
6
(O,OH)
 
24
14.3.22Joesmithite
{Pb}{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Be
 
2
Si
 
6
O
 
22
)(OH)
 
2
14.3.23Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.24Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.25Calciogadolinite-(Y)
(YCa)
 
2
Fe
3+
 
Be
 
2
[SiO
 
4
]
 
2
O
 
2

Other Names for Sverigeite

Synonyms:
IMA1983-066
Other Languages:
German:Sverigeit
Russian:Сверигеит
Spanish:Sverigeita

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 Sverigeite

Reference List:

- +
Geologiska Föeningens I Stockholm Förhandlinger (1984), 106, 175-177.

American Mineralogist (1985): 70: 1332.

American Mineralogist (1989): 74: 1343-1350.

Anthony, Bideaux, Bladh & Nichols (1995), Handbook of Mineralogy, Vol. II, Silicates, Mineral Data Publishing.

Gaines, et.al. (1997), Dana's New Mineralogy, 8th Edition, John Wiley & Sons, New York.

Internet Links for Sverigeite

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    • Localities for Sverigeite

    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.
    Sweden
     
    • Värmland
      • Filipstad
    		GFF,(1984) 106, 175-177; 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.
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