Bergslagite
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About Bergslagite
Formula:
CaBeAsO4(OH)
Colour:
Colourless, white, grey, dark grey-brown, brownish black, green, pink
Lustre:
Vitreous, Greasy
Hardness:
5
Specific Gravity:
3.4
Crystal System:
Monoclinic
Member of:
Name:
For its occurrence at Långban, which is in the Bergslagen region of Sweden.
Type Locality:
This page provides mineralogical data about Bergslagite.
Classification of Bergslagite
Approved
Approval Year:
1983
7/B.01-30
8.BA.10
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
41.5.4.4
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
20.2.16
20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
Physical Properties of Bergslagite
Vitreous, Greasy
Transparency:
Translucent
Colour:
Colourless, white, grey, dark grey-brown, brownish black, green, pink
Hardness:
5 on Mohs scale
Fracture:
Irregular/Uneven
Density:
3.4 g/cm3 (Measured) 3.4 g/cm3 (Calculated)
Optical Data of Bergslagite
Type:
Biaxial (-)
RI values:
nα = 1.659 - 1.660 nβ = 1.678 - 1.681 nγ = 1.690 - 1.694
2V:
Measured: 70° , Calculated: 74° to 78°
Max Birefringence:
δ = 0.031 - 0.034
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
Dispersion:
r >> v
Chemical Properties of Bergslagite
Formula:
CaBeAsO4(OH)
IMA Formula:
CaBe(AsO4)(OH)
Common Impurities:
Si
Crystallography of Bergslagite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 4.88 Å, b = 7.8 Å, c = 10.12 Å
β = 90.16°
β = 90.16°
Ratio:
a:b:c = 0.626 : 1 : 1.297
Unit Cell V:
385.21 ų (Calculated from Unit Cell)
Z:
4
Morphology:
elongated flattened crystals to 1 cm; crusts
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.200 Å | (10) |
| 3.519 Å | (8) |
| 4.879 Å | (7) |
| 3.905 Å | (7) |
| 3.046 Å | (7) |
| 2.917 Å | (7) |
| 2.409 Å | (6) |
Type Occurrence of Bergslagite
General Appearance of Type Material:
As thin veinlets in hematite ore
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark
National Museum of National History, Washington D.C., USA; 162582
National Museum of National History, Washington D.C., USA; 162582
Associated Minerals at Type Locality:
Synonyms of Bergslagite
Other Language Names for Bergslagite
Relationship of Bergslagite to other Species
Member of:
Other Members of this group:
| Herderite | CaBePO4(F,OH) | Mon. 2/m |
| Hydroxylherderite | CaBe(PO4)(OH,F) | Mon. 2/m : P21/b |
Common Associates
Associated Minerals Based on Photo Data:
| 5 photos of Bergslagite associated with Hematite | Fe2O3 |
| 4 photos of Bergslagite associated with Tilasite | CaMg(AsO4)F |
| 2 photos of Bergslagite associated with Svabite | Ca5(AsO4)3F |
| 1 photo of Bergslagite associated with Berzeliite | (NaCa2)Mg2(AsO4)3 |
| 1 photo of Bergslagite associated with Hydroxylherderite | CaBe(PO4)(OH,F) |
| 1 photo of Bergslagite associated with Quartz | SiO2 |
Related Minerals - Nickel-Strunz Grouping
| 8.BA.05 | Väyrynenite | Mn2+Be(PO4)(OH,F) | Mon. 2/m : P21/b |
| 8.BA.10 | Herderite | CaBePO4(F,OH) | Mon. 2/m |
| 8.BA.10 | Hydroxylherderite | CaBe(PO4)(OH,F) | Mon. 2/m : P21/b |
| 8.BA.15 | Babefphite | BaBePO4(F,OH) | Tet. |
Related Minerals - Dana Grouping (8th Ed.)
| 41.5.4.1 | Herderite | CaBePO4(F,OH) | Mon. 2/m |
| 41.5.4.2 | Hydroxylherderite | CaBe(PO4)(OH,F) | Mon. 2/m : P21/b |
| 41.5.4.3 | Väyrynenite | Mn2+Be(PO4)(OH,F) | Mon. 2/m : P21/b |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 20.2.1 | Bearsite | Be2(AsO4)(OH) · 4H2O | Mon. |
| 20.2.2 | Brassite | Mg(HAsO4) · 4H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
| 20.2.3 | Rößlerite | Mg(HAsO4) · 7H2O | Mon. 2/m : B2/b |
| 20.2.4 | Hörnesite | Mg3(AsO4)2 · 8H2O | Mon. 2/m : B2/m |
| 20.2.5 | Weilite | Ca(HAsO4) | Tric. 1 : P1 |
| 20.2.6 | Johnbaumite | Ca5(AsO4)3OH | Hex. 6/m : P63/m |
| 20.2.7 | Haidingerite | CaHAsO4 · H2O | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 20.2.8 | Pharmacolite | Ca(HAsO4) · 2H2O | Mon. m |
| 20.2.9 | Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O | Mon. 2/m : B2/b |
| 20.2.10 | Vladimirite | Ca4(AsO4)2(AsO3OH) · 4H2O | Mon. 2/m : P21/b |
| 20.2.11 | Guérinite | Ca5(AsO4)2(HAsO4)2 · 9H2O | Mon. 2/m : P21/b |
| 20.2.12 | Ferrarisite | Ca5(AsO4)2(HAsO4)2 · 9H2O | Tric. 1 : P1 |
| 20.2.13 | Rauenthalite | Ca3(AsO4)2 · 10H2O | Tric. 1 : P1 |
| 20.2.14 | Phaunouxite | Ca3(AsO4)2 · 11H2O | Tric. |
| 20.2.15 | Mcnearite | NaCa5(AsO4)(HAsO4)4 · 4H2O | Tric. |
| 20.2.17 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 20.2.18 | Talmessite | Ca2Mg(AsO4)2 · 2H2O | Tric. |
| 20.2.19 | Irhtemite | Ca4Mg(AsO4)2(HAsO4)2 · 4H2O | Mon. |
| 20.2.20 | Camgasite | CaMg(AsO4)(OH) · 5H2O | Mon. 2/m : P21/m |
| 20.2.21 | Picropharmacolite | Ca4Mg(AsO4)2(HAsO4)2 · 11H2O | Tric. 1 : P1 |
| 20.2.22 | Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O | Tet. 4 2m : P4 2m |
Fluorescence of Bergslagite
SW-UV: pale shades of yellowish brown, greenish or bluish
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 Bergslagite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Hansen, S., Fälth, L., Petersen, O. V. & Johnson, O. (1984): Bergslagite, a new mineral species from Långban, Sweden: Neues Jahrbuch für Mineralogie, Monatshefte: 1984, 257-262. [Amer. Mineral. 70:436 (1985) (abstract)].
- Hansen, S. , Fälth, L. & Johnsen, O. (1984): Bergslagite , a mineral with tetrahedral berylloarsenate sheet anions. Zeitschrift für Kristallographie: 160: 73-80. [Amer. Mineral. 70:436 (1985) (abstract)].
- Kolitsch, Uwe (1996): Mineralien-Welt: 7(5):45-46.
- American Mineralogist: 74: 951.
Internet Links for Bergslagite
mindat.org URL:
https://www.mindat.org/min-632.html
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Localities for Bergslagite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Brazil | |
| Luiz Alberto Dias Menezes Filho, Mario Luiz de Sá Carneiro Chaves, Coralie Heinis Dias, Daniel Atencio (2016): Recent mineral discoveries in the Coronel Murta, Taquaral, and Medina pegmatite fields, northeastern Minas Gerais, Brazil. REM - Int. Eng. J. 69, 301-307. [http://www.scielo.br/pdf/remi/v69n3/2448-167X-remi-69-03-0301.pdf].; Knut Edvard Larsen collection # MM-6229 (Ex-Luiz Menezes specimen) |
Germany | |
| U. Kolitsch (1996): Bergslagit aus dem Rhyolithsteinbruch bei Sailauf im Spessart. Mineralien-Welt 7 (5), 45-46. (in German) |
Italy | |
| Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV |
Norway | |
| Raade, G., Kolitsch, U. and Husdal, T.A. (2006): Si-rich bergslagite from a granitic pegmatite at Tennvatn, north Norway. GFF 128, 65-68. |
Sweden (TL) | |
| Hansen, S., Fälth, L., Petersen, O. V. & Johnson, O. (1984): Bergslagite, a new mineral species from Långban, Sweden: Neues Jahrbuch für Mineralogie, Monatshefte:1984, 257-262 ; Hansen, S. , Fälth, L. & Johnsen, O. (1984): Bergslagite , a mineral with tetrahedral berylloarsenate sheet anions. Zeitschrift für Kristallographie: 160: 73-80; 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. |
Switzerland | |
| Brugger, J., & Gieré, R. (1999). As, Sb, Be and Ce enrichment in minerals from a metamorphosed Fe-Mn deposit, Val Ferrera, eastern Swiss Alps. The Canadian Mineralogist, 37(1), 37-52. |
| Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 362. |
| Brugger, J., & Gieré, R. (1999). As, Sb, Be and Ce enrichment in minerals from a metamorphosed Fe-Mn deposit, Val Ferrera, eastern Swiss Alps. The Canadian Mineralogist, 37(1), 37-52.; Brugger, J., Krivovichev, S.V., Kolitsch, U., Meisser, N., Andrut, M., Ansermet, S., Burns, P.C. (2002) Description and crystal structure of manganlotharmeyerite, Ca[Mn3+,[],Mg]2{AsO4,[AsO2(OH)2]}2(OH,H2O)2 from the Starlera Mn deposit, Swiss Alps, and a redefinition of lotharmeyerite. Canadian Mineralogist: 40: 1597-1608. |
| Die Mineralien der Schweiz, Max Weibel, ISBN 3-7643-2465-1; Brugger, J., & Gieré, R. (1999). As, Sb, Be and Ce enrichment in minerals from a metamorphosed Fe-Mn deposit, Val Ferrera, eastern Swiss Alps. The Canadian Mineralogist, 37(1), 37-52. |
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Tennvatn pegmatite, Sørfold, Nordland, Norway