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Bergslagite

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About BergslagiteHide

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
Name:
For its occurrence at Långban, which is in the Bergslagen region of Sweden.
This page provides mineralogical data about Bergslagite.


Classification of BergslagiteHide

Approved
Approval Year:
1983
8.BA.10

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
20.2.16

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba

Physical Properties of BergslagiteHide

Vitreous, Greasy
Transparency:
Translucent
Colour:
Colourless, white, grey, dark grey-brown, brownish black, green, pink
Hardness:
Fracture:
Irregular/Uneven
Density:
3.4 g/cm3 (Measured)    3.4 g/cm3 (Calculated)

Optical Data of BergslagiteHide

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.
Surface Relief:
High
Dispersion:
r >> v

Chemical Properties of BergslagiteHide

Formula:
CaBeAsO4(OH)
IMA Formula:
CaBe(AsO4)(OH)
Common Impurities:
Si

Crystallography of BergslagiteHide

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°
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.200 (10)
3.519 (8)
4.879 (7)
3.905 (7)
3.046 (7)
2.917 (7)
2.409 (6)

Type Occurrence of BergslagiteHide

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
Associated Minerals at Type Locality:

Synonyms of BergslagiteHide

Other Language Names for BergslagiteHide

Relationship of Bergslagite to other SpeciesHide

Other Members of this group:
HerderiteCaBePO4(F,OH)Mon. 2/m
Herderite-Hydroxylherderite SeriesMon.
HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hematite5 photos of Bergslagite associated with Hematite on mindat.org.
Tilasite4 photos of Bergslagite associated with Tilasite on mindat.org.
Svabite2 photos of Bergslagite associated with Svabite on mindat.org.
Berzeliite1 photo of Bergslagite associated with Berzeliite on mindat.org.
Hydroxylherderite1 photo of Bergslagite associated with Hydroxylherderite on mindat.org.
Quartz1 photo of Bergslagite associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BA.05VäyryneniteMn2+Be(PO4)(OH,F)Mon. 2/m : P21/b
8.BA.10HerderiteCaBePO4(F,OH)Mon. 2/m
8.BA.10HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
8.BA.15BabefphiteBaBePO4(F,OH)Tet.

Related Minerals - Dana Grouping (8th Ed.)Hide

41.5.4.1HerderiteCaBePO4(F,OH)Mon. 2/m
41.5.4.2HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
41.5.4.3VäyryneniteMn2+Be(PO4)(OH,F)Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.2.1BearsiteBe2(AsO4)(OH) · 4H2OMon.
20.2.2BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
20.2.3RößleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
20.2.4HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.2.5WeiliteCa(HAsO4)Tric. 1 : P1
20.2.6JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
20.2.7HaidingeriteCaHAsO4 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
20.2.8PharmacoliteCa(HAsO4) · 2H2OMon. m
20.2.9SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
20.2.10VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m : P21/b
20.2.11GuériniteCa5(AsO4)2(HAsO4)2 · 9H2OMon. 2/m : P21/b
20.2.12FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
20.2.13RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
20.2.14PhaunouxiteCa3(AsO4)2 · 11H2OTric.
20.2.15McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
20.2.17AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.2.18TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
20.2.19IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.
20.2.20CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
20.2.21PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2OTric. 1 : P1
20.2.22BariopharmacosideriteBa0.5Fe3+4(AsO4)3(OH)4 · 5H2OTet. 4 2m : P4 2m

Fluorescence of BergslagiteHide

SW-UV: pale shades of yellowish brown, greenish or bluish

Other InformationHide

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 BergslagiteHide

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 BergslagiteHide

Localities for BergslagiteHide

This 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.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Minas Gerais
    • Coronel Murta
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
 
  • Bavaria
    • Franconia
      • Spessart
        • Hösbach
          • Sailauf
            • Hartkoppe
U. Kolitsch (1996): Bergslagit aus dem Rhyolithsteinbruch bei Sailauf im Spessart. Mineralien-Welt 7 (5), 45-46. (in German)
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Antigorio Valley
          • Devero Valley
            • Baceno
              • Devero Alp
Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
Norway
 
  • Nordland
    • Sørfold
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)
 
  • Värmland
    • Filipstad
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
 
  • Grischun (Grisons; Graubünden)
    • Albula Valley
      • Oberhalbstein (Surses; Sursass)
        • Tinizong (Tinzen)
    • Hinterrhein Valley
      • Ferrera Valley
        • Ausserferrera
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 362.
        • Starlera Valley
    • Vorderrhein Valley
      • Tujetsch (Tavetsch)
        • Curnera Valley
Die Mineralien der Schweiz, Max Weibel, ISBN 3-7643-2465-1
Mineral and/or Locality  
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