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Långbanite

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Trädgårdsvarpen (The garden dumps)

Långban, Filipstad, Värmland, Sweden
Formula:
Mn2+4Mn3+9Sb5+O16(SiO4)2
Minor Ca may replace Mn2+, minor Fe3+ may replace Mn3+.
Colour:
black
Lustre:
Sub-Metallic
Hardness:
Specific Gravity:
4.9
Crystal System:
Trigonal
Name:
Named in 1877 by Gustav Flink after the type locality: Långban, Sweden.
This page provides mineralogical data about Långbanite.


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Classification of LångbaniteHide

Approved, 'Grandfathered' (first described prior to 1959)
Approval Year:
1971
9.AG.10

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
44.3.4.1

44 : ANTIMONATES
3 : Miscellaneous
17.7.19

17 : Silicates Containing other Anions
7 : Silicates with vanadate, arsenate or antimonate

Physical Properties of LångbaniteHide

Sub-Metallic
Transparency:
Opaque
Colour:
black
Streak:
brown
Hardness:
6½ on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Distinct/Good
{001} good.
Fracture:
Conchoidal
Density:
4.9 g/cm3 (Measured)    

Optical Data of LångbaniteHide

Type:
Uniaxial (-)
RI values:
nω = 2.360 nε = 2.310
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Comments:
Refractive indices recorded for Li light.

Chemical Properties of LångbaniteHide

Formula:
Mn2+4Mn3+9Sb5+O16(SiO4)2

Minor Ca may replace Mn2+, minor Fe3+ may replace Mn3+.

Crystallography of LångbaniteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 11.563(2) Å, b = 11.563 Å, c = 11.100(2) Å
α = 90°, β = 90°, γ = 120°
Ratio:
a:b:c = 1 : 1 : 0.96
Unit Cell V:
1,285.27 ų (Calculated from Unit Cell)
Morphology:
Complex prismatic crystals to 1 cm.
Comment:
Also reported as monoclinic, C2/m, a = 11.561(5) Å, b = 20.05(1) Å, c = 11.075(9) Å, β = 90.03(5)° by Guiseppetti et al. (1991).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.55 (100)
2.745 (90)
2.80 (80)
1.54 (80)
1.67 (70)
1.43 (50)
1.99 (40)

Type Occurrence of LångbaniteHide

General Appearance of Type Material:
Short to long black prisms with vertical striations.
Geological Setting of Type Material:
In crystalline limestones and manganese-rich skarns in metamorphosed manganese deposits.

Synonyms of LångbaniteHide

Other Language Names for LångbaniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Schefferite5 photos of Långbanite associated with Schefferite on mindat.org.
Rhodonite4 photos of Långbanite associated with Rhodonite on mindat.org.
Calcite4 photos of Långbanite associated with Calcite on mindat.org.
Roméite Group3 photos of Långbanite associated with Roméite Group on mindat.org.
Svabite1 photo of Långbanite associated with Svabite on mindat.org.
Parwelite1 photo of Långbanite associated with Parwelite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AG.05AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.15MalayaiteCaSn(SiO4)OMon.
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon.
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Cerite-(La)(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon.
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.25Mieite-(Y)Y4Ti(SiO4)2O[F,(OH)]6Orth. mmm (2/m 2/m 2/m) : Cmcm
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet.
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet.
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth.
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth.
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric.
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.7.1SuzukiiteBaVSi2O7Orth.
17.7.2FranciscaniteMn2+6(V5+,☐)2(SiO4)2(O,OH)6Hex.
17.7.3Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)
17.7.4Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 2/m)
17.7.5MedaiteMn2+6V5+Si5O18(OH)Mon.
17.7.6JohninnesiteNa2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2Tric.
17.7.7TiragalloiteMn2+4As5+Si3O12(OH)Mon. 2/m
17.7.8DixeniteCuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6Trig.
17.7.9AsbecasiteCa3(Ti,Sn4+)Be2(AsO3)6(SiO4)2Trig. 3m : P3c1
17.7.10McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21Trig. 3m (3 2/m)
17.7.11KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16Orth. 2 2 2 : C2 2 21
17.7.12SchalleriteMn2+16As3Si12O36(OH)17Trig. 3m : P3m1
17.7.13Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
17.7.14KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm (2/m 2/m 2/m) : Cmca
17.7.15YeatmaniteZn6Mn2+9Sb5+2(SiO4)4O12Tric.
17.7.16WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1
17.7.17Katoptrite(Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20Mon. 2/m : B2/m
17.7.18ParweliteMn10Sb2As2Si2O24Mon. m : Bb
17.7.20ChapmaniteFe3+2Sb3+(Si2O5)O3(OH)Mon. m : Bm
17.7.21Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)Trig. 3m : R3m

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 LångbaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Igelström (1889) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 11: 389 (as Ferrostibian).
Igelström (1890) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: 1: 250 (as Ferrostibian).
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1026 (as Ferrostibian).
Moore, P.B. (1967) Contributions to Swedish Mineralogy II Melanostibite; Manganostibite; Ferrostibian = Långbanite.
Pabst, A. (1968) New Mineral Names. American Mineralogist: 53: 1779.
American Mineralogist (1970): 55: 1489-1499.
Moore, P.B, Sen Gupta, P.K., Le Page, Y. (1991): The remarkable långbanite structure type: crystal structure, chemical crystallography and relationship to some other close-packed cation structures. American Mineralogist: 76: 1408-1425.
Giuseppetti, G., Mazzi, F., Tadini, C. (1991): The crystal structure of monoclinic långbanite, (Mn,Ca,Fe,Mg)2+4 (Mn,Fe)3+9 Sb5+[O16(SiO4)2]. Neues Jahrbuch für Mineralogie, Monatshefte: 193-211.
Neues Jahrbuch für Mineralogie, Monatshefte (1992): 7: 452.
Nysten, P. & Ericsson, T. (1994): Fe-rich långbanite from the Nyberget ore-field, Sweden. Neues Jahrbuch für Mineralogie, Monatshefte 1994, 557-566.

Internet Links for LångbaniteHide

Localities for LångbaniteHide

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.
Austria
 
  • Tyrol
    • East Tyrol
      • Virgen valley
        • Prägraten
          • Timmelbach valley
Kolitsch, U., Schachinger, T., Auer, C. (2017): 2026) Albit, Amphibol, Bementit(?), Braunit, ein Mn-Chlorit, As-haltiger Fluorapatit, Galaxit, Hämatit, Hübnerit, Iwakiit(?), Jakobsit, Kalifeldspat, Kutnahorit, Långbanit, Manganoxide, Nickelskutterudit, Pyrophanit, Quarz, Rhodochrosit, Rhodonit, Safflorit, Sarkinit, Sonolith, Spessartin, Tephroit, Uraninit und Zirkon aus Manganvererzungen von der Wunwand (Wunspitze) bei Prägraten, Osttirol. Pp. 241-246 in Walter, F. et al. (2017): Neue Mineralfunde aus Österreich LXVI. Carinthia II, 207./127., 217-284.
Japan
 
  • Honshu Island
    • Tohoku Region
      • Fukushima Prefecture
        • Iwaki City
Matsubara, S. et al (1986) Koubutsu-Gakkai Kou'en-Youshi (Abstracts of the Meeting of the Mineralogical Society of Japan), 39.; Mineralogical Journal Vol. 18 (1996) , No. 4 pp 155-160
Norway
 
  • Telemark
    • Tokke
      • Botnedal
Wel, D.van der. (1999): The Minerals of the Brandsnuten Manganes Deposit, Tokke, Norway. Bergverksmuseets Skrift 15: 74-86
Sweden (TL)
 
  • Värmland
    • Filipstad
Zeits.Krist.Min.(1888) 13, 1-8; 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.
Adolfsson, S. G. (1979): Notes on Recent Underground Collecting at Långban. Mineralogical Record. 10: 215-217
  • Västmanland
    • Hällefors
      • Grythyttan
Moore, P. B. (1972). III. On Igelström's Manganese Arsenates and Antimonates from the Sjö Mine, Grythyttan, Örebro County, Sweden. GFF, 94(3), 423-434.
    • Lindesberg
Nysten, P. & Ericsson, T. (1994): Fe-rich långbanite from the Nyberget ore-field, Sweden. Neues Jahrbuch für Mineralogie, Monatshefte 1994, 557-566.
Collection of Bergsskolan, Filipstad. Kjell Gatedal photo (8115)
Switzerland
 
  • Grischun (Grisons; Graubünden)
    • Hinterrhein Valley
      • Ferrera Valley
        • Ausserferrera
Roth, P. & Meisser, N. (2013): Die seltenen Mineralien der Bündner Manganvorkommen. Schweizer Strahler 47 (3), 8-21 (in German and French).
Mineral and/or Locality  
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