Sveinbergeite
This page is currently not sponsored. Click here to sponsor this page.
About Sveinbergeite
Formula:
Ca(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4
Colour:
Deep green
Lustre:
Vitreous, Pearly
Hardness:
3
Specific Gravity:
3.152 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named in honour of Svein Arne Berge (b. 1949), a noted Norwegian
amateur mineralogist and collector who has made a significant contribution to the mineralogy of the alkaline pegmatites in the Larvik plutonic complex, Norway and who was the first to find the mineral in 1987.
amateur mineralogist and collector who has made a significant contribution to the mineralogy of the alkaline pegmatites in the Larvik plutonic complex, Norway and who was the first to find the mineral in 1987.
Type Locality:
This page provides mineralogical data about Sveinbergeite.
Classification of Sveinbergeite
Approved
Approval Year:
2010
9.DC.05
9 : SILICATES (Germanates)
D : Inosilicates
C : Inosilicates with branched 2-periodic single chains; Si2O6 + 2SiO3 Si4O12
9 : SILICATES (Germanates)
D : Inosilicates
C : Inosilicates with branched 2-periodic single chains; Si2O6 + 2SiO3 Si4O12
69.1.1.6
69 : INOSILICATES Chains with Side Branches or Loops
1 : Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
69 : INOSILICATES Chains with Side Branches or Loops
1 : Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
Physical Properties of Sveinbergeite
Vitreous, Pearly
Colour:
Deep green
Streak:
pale green
Hardness:
3 on Mohs scale
Hardness Data:
Measured
Cleavage:
Perfect
on {001}
on {001}
Density:
3.152 g/cm3 (Calculated)
Optical Data of Sveinbergeite
Type:
Biaxial (+)
RI values:
nα = 1.745 nβ = 1.746 nγ = 1.753
2V:
Measured: 20(3)°
Max Birefringence:
δ = 0.008

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Visible
Comments:
Z > X ~ Y : Z is deep green, X and Y are brownish green.
Chemical Properties of Sveinbergeite
Formula:
Ca(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4
Crystallography of Sveinbergeite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.33(1) Å, b = 11.82(2) Å, c = 11.85(2) Å
α = 101.2(1)°, β = 98.2(1)°, γ = 102.5(2)°
α = 101.2(1)°, β = 98.2(1)°, γ = 102.5(2)°
Ratio:
a:b:c = 0.451 : 1 : 1.003
Unit Cell V:
701.56 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
11.148 Å | (20) |
5.683 Å | (5) |
3.799 Å | (43) |
2.853 Å | (100) |
2.633 Å | (7) |
2.489 Å | (5) |
2.267 Å | (5) |
1.643 Å | (5) |
Type Occurrence of Sveinbergeite
General Appearance of Type Material:
As 0.01-0.05 mm thick lamellar (0.2-0.5 X 5-10mm crystals forming rosette-like divergent groups and spherical aggregates. Often covered by brown coatings of iron (and possibly manganese) oxides.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow,
Russia, catalogue number 3966
Russia, catalogue number 3966
Geological Setting of Type Material:
A syenite pegmatite embedded in larvikite in the Larvik plutonic complex in the southern part of the Oslo Region, Norway.
Synonyms of Sveinbergeite
Relationship of Sveinbergeite to other Species
Member of:
Other Members of this group:
Devitoite | [Ba6(PO4)2(CO3)][Fe2+7(OH)4Fe3+2O2(Si4O12)2] | Tric. 1 : P1 |
Lobanovite | K2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4 | Mon. 2/m : B2/m |
Common Associates
Aegirine | NaFe3+Si2O6 |
Albite | Na(AlSi3O8) |
Fluorapatite | Ca5(PO4)3F |
Galena | PbS |
Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 |
Microcline | K(AlSi3O8) |
Molybdenite | MoS2 |
Related Minerals - Nickel-Strunz Grouping
9.DC.05 | Astrophyllite | K2NaFe2+7Ti2Si8O28(OH)4F | Tric. 1 : P1 |
9.DC.05 | Hydroastrophyllite | (H3O,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31 | Tric. |
9.DC.05 | Kupletskite | (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F | Tric. |
9.DC.05 | Lobanovite | K2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4 | Mon. 2/m : B2/m |
9.DC.05 | Niobophyllite | (K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31 | Tric. |
9.DC.05 | Zircophyllite | K2NaFe2+7Zr2(Si4O12)2O2(OH)4F | Tric. |
9.DC.05 | Kupletskite-(Cs) | Cs2NaMn2+7Ti2(Si4O12)2O2(OH)4F | Tric. |
9.DC.05 | Niobokupletskite | K2NaMn2+7(Nb,Ti)(Si4O12)2O2(OH)4(O,F) | Tric. 1 : P1 |
9.DC.05 | Nalivkinite | Li2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4F | Tric. 1 : P1 |
Related Minerals - Dana Grouping (8th Ed.)
69.1.1.1 | Astrophyllite | K2NaFe2+7Ti2Si8O28(OH)4F | Tric. 1 : P1 |
69.1.1.2 | Kupletskite | (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F | Tric. |
69.1.1.3 | Kupletskite-(Cs) | Cs2NaMn2+7Ti2(Si4O12)2O2(OH)4F | Tric. |
69.1.1.4 | Niobophyllite | (K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31 | Tric. |
69.1.1.5 | Zircophyllite | K2NaFe2+7Zr2(Si4O12)2O2(OH)4F | Tric. |
69.1.1.5 | Nalivkinite | Li2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4F | Tric. 1 : P1 |
69.1.1.6 | Hydroastrophyllite | (H3O,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31 | Tric. |
69.1.1.7 | Lobanovite | K2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4 | Mon. 2/m : B2/m |
Other Information
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 Sveinbergeite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Khomyakov, A.P., Cámara, F., Sokolova, E. and Hawthorne, F.C. (2010): Sveinbergeite, IMA 2010-027. CNMNC Newsletter, October 2010, p. 899.
Mineralogical Magazine 74, 899-902.
Berge, S.A., Larsen, K.E. & Andersen, F. (2011): Buer, Vesterøya, Sandefjord- en typelokalitet for et nytt mineral. Norsk Bergverksmuseum Skrift. 46: 49-56
Khomyakov, A.P., Cámara, F., Sokolova, E.,Abdu, Y. & Hawthorne, F.C. (2011): Sveinbergeite, Ca(Fe6 2+6 Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4, a new astrophyllite-group mineral from the Larvik Plutonic Complex, Oslo Region, Norway: description and crystal structure. Mineralogical Magazine. 75(5): 2687–2702
Internet Links for Sveinbergeite
mindat.org URL:
https://www.mindat.org/min-40285.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Sveinbergeite
Locality List




All localities listed without proper references should be considered as questionable.
Norway (TL) | |
| CNMNC Newsletter, October 2010; Khomyakov, A.P., Cámara, F., Sokolova, E.,Abdu, Y. & Hawthorne, F.C. (2011): Sveinbergeite, Ca(Fe6 2+6 Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4, a new astrophyllite-group mineral from the Larvik Plutonic Complex, Oslo Region, Norway: description and crystal structure. Mineralogical Magazine. 75(5): 2687–2702 |
Buer, Vesterøya, Sandefjord, Vestfold, Norway