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Welinite

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Formula:
Mn2+6(W6+,Mg)2(SiO4)2(O,OH)6
Colour:
orange-red, deep red brown to reddish black
Lustre:
Resinous
Hardness:
4
Crystal System:
Trigonal
Member of:
Name:
Named after Eric Welin (b. 1923), mineralogist and geochronologist, Swedish Museum of Natural History, Stockholm, Sweden
This page provides mineralogical data about Welinite.


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Classification of WeliniteHide

Approved
Approval Year:
1966
9.AF.75

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
52.4.1.2

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
17.10.30

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate

Physical Properties of WeliniteHide

Resinous
Colour:
orange-red, deep red brown to reddish black
Streak:
pale reddish brown
Hardness:
Cleavage:
Distinct/Good

Optical Data of WeliniteHide

Type:
Uniaxial (+)
RI values:
nω = 1.864 nε = 1.880
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of WeliniteHide

Formula:
Mn2+6(W6+,Mg)2(SiO4)2(O,OH)6
IMA Formula:
(Mn4+,W)(Mn2+,Mg)(SiO4)(O,OH)3
Common Impurities:
Fe,Sb,H2O

Crystallography of WeliniteHide

Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
P3
Cell Parameters:
a = 8.15 Å, c = 4.78 Å
Ratio:
a:c = 1 : 0.587
Unit Cell V:
274.96 ų (Calculated from Unit Cell)
Comment:
Originally assumed to be P63.

Type Occurrence of WeliniteHide

Synonyms of WeliniteHide

Other Language Names for WeliniteHide

German:Welinit
Spanish:Welinita

Relationship of Welinite to other SpeciesHide

Member of:
Other Members of this group:
BarwooditeMn2+6Nb5+(SiO4)2O3(OH)3Trig. 3 : P3

Common AssociatesHide

Associated Minerals Based on Photo Data:
Rhodonite2 photos of Welinite associated with Rhodonite on mindat.org.
Calcite1 photo of Welinite associated with Calcite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AF.05SillimaniteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m)
9.AF.10AndalusiteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.10KanonaiteMn3+Al(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.15KyaniteAl2(SiO4)OTric. 1 : P1
9.AF.20MulliteAl4+2xSi2-2xO10-xOrth. mmm (2/m 2/m 2/m) : Pbam
9.AF.20Krieselite(Al,Ga)2(GeO4)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.23BoromulliteAl9BSi2O19Orth. mm2 : Cmc21
9.AF.25YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)Mon. 2/m : P21/m
9.AF.30MagnesiostauroliteMg(Mg,Li)3(Al,Mg)18Si8O44(OH)4Mon. 2/m : B2/m
9.AF.30StauroliteFe2+2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.30ZincostauroliteZn2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.35TopazAl2(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.40NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.45AlleghanyiteMn2+5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.45Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
9.AF.45ReinhardbraunsiteCa5(SiO4)2(OH,F)2Mon. 2/m : P21/b
9.AF.45KumtyubeiteCa5(SiO4)2F2Mon. 2/m : P21/b
9.AF.45HydroxylchondroditeMg5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.50Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.50Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2Orth.
9.AF.50Unnamed (Ca-analogue of Humite)Ca7(SiO4)4F2Orth. mmm (2/m 2/m 2/m)
9.AF.55ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
9.AF.55SonoliteMn2+9(SiO4)4(OH)2Mon.
9.AF.55HydroxylclinohumiteMg9(SiO4)4(OH)2Mon. 2/m
9.AF.60LeucophoeniciteMn2+7(SiO4)3(OH)2Mon. 2/m : P21/b
9.AF.65Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2Orth.
9.AF.70JerrygibbsiteMn2+9(SiO4)4(OH)2Orth. mmm (2/m 2/m 2/m) : Pbcn
9.AF.75FranciscaniteMn2+6(V5+,☐)2(SiO4)2(O,OH)6Hex.
9.AF.75ÖrebroiteMn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3Hex.
9.AF.80EllenbergeriteMg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10Hex.
9.AF.85Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.85MagnesiochloritoidMgAl2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.85Ottrélite(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2Mon.
9.AF.90PoldervaartiteCaCa[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca
9.AF.90OlmiiteCaMn2+[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca

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

52.4.1.1ÖrebroiteMn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3Hex.
52.4.1.3KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
52.4.1.4FranciscaniteMn2+6(V5+,☐)2(SiO4)2(O,OH)6Hex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.10.1NoseanNa8(Al6Si6O24)(SO4) · H2OIso. 4 3m : P4 3n
17.10.2PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2OHex.
17.10.3Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2OHex. 6 : P63
17.10.4Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)Iso. 4 3m : P4 3n
17.10.5Liottite(Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4Hex.
17.10.6Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)Mon.
17.10.7Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2OMon.
17.10.8MicrosommiteNa4K2Ca2(Al6Si6O24)(SO4)Cl2Hex.
17.10.9Delhayelite(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2OOrth.
17.10.10HydrodelhayeliteKCa2AlSi7O17(OH)2 · 6H2OOrth.
17.10.11Davyne(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2Hex. 6/m : P63/m
17.10.12Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6Trig. 3m : P3 1c
17.10.13Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2OHex.
17.10.14Giuseppettite(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2Hex.
17.10.15Sacrofanite(Na61K19Ca32)(Si84Al84O336)(SO4)26Cl2F6•2H2OHex.
17.10.16Chessexite(Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2OOrth.
17.10.17InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4Tric. 1 : P1
17.10.18ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
17.10.19Ellestadite
17.10.20ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
17.10.21HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
17.10.22FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
17.10.23MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
17.10.24QueititePb4Zn2(SO4)(SiO4)(Si2O7)Mon. 2 : P21
17.10.25RoeblingitePb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2OMon. 2/m : B2/m
17.10.26YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)Tric. 1 : P1
17.10.27KegelitePb8Al4(Si8O20)(SO4)2(CO3)4(OH)8Mon.
17.10.28Wenkite(Ba,K)4(Ca,Na)6[(SO4)3|(Si,Al)20O39(OH)2] · 0.5H2OHex.
17.10.29MacquartiteCu2Pb7(CrO4)4(SiO4)2(OH)2Mon.

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 WeliniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Arkiv för Mineralogi och Geologi (1967): 4: 407-411.
American Mineralogist (1968): 53: 1064.
American Mineralogist (1986): 71: 1522-1526.

Internet Links for WeliniteHide

Localities for WeliniteHide

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.
France
 
  • Occitanie
    • Hautes-Pyrénées
Le Règne Minéral 47: 5-21
        • Nabias
        • Vielle-Aure
Ragu, A. (1994): Helvite from the French Pyrénées as evidence for granite-related hydrothermal activity. Canadian Mineralogist 32, 111-120.; DE ASCENCAO GUEDES R., TIXADOR Y., CASTERET A. & GOUJOU JC. (2002) La mine de Coustou, Vielle-Aure, Hautes-Pyrénées. Le Règne Minéral, 47, 23-31. (in french)
    • Lozère
      • La Canourgue
        • Auxillac
BRGM (1981) - Fiche BSS 08625X4003/GT
Japan
 
  • Kyushu Region
    • Kumamoto Prefecture
      • Itsuki
Mem. Fac. Sci., Ehime University, 6 (2000), 1-7.
Sweden (TL)
 
  • Värmland
    • Filipstad
Arkiv Min.Geol.(1967) 4, 407-411; 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.
  • Västmanland
    • Hällefors
      • Grythyttan
Holtstam, D. (2001): W and V mineralization in Långban-type Fe-Mn deposits: Epigenetic or Syngenetic? Geologiske Föreningen i Stockholm Förhandlingar 123: 29-33; Moore, P. B. (1967). Welinite, a new mineral from LAngban. Arkiv fOr Mineralogi och Geologi, 4, 407-411.
Mineral and/or Locality  
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