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Bariumbannisterite

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Formula:
(K,H3O)(Ba,Ca)(Mn2+,Fe2+,Mg)21(Si,Al)32O80(O,OH)16 · 4-12H2O
Hardness:
4
Crystal System:
Monoclinic
Almost certainly corresponds to the "Ba analogue of bannisterite", that is, UM1989-30-SiO:AlBaCaFeHKMgMn.


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Classification of BariumbannisteriteHide

8/H.17-20

8 : Silicates
H : Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others
17 : Stilpnomelane series

Physical Properties of BariumbannisteriteHide

Hardness:
Cleavage:
Perfect
Perfect

Chemical Properties of BariumbannisteriteHide

Formula:
(K,H3O)(Ba,Ca)(Mn2+,Fe2+,Mg)21(Si,Al)32O80(O,OH)16 · 4-12H2O

Crystallography of BariumbannisteriteHide

Crystal System:
Monoclinic

Other Language Names for BariumbannisteriteHide

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

8/H.17-10Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2OMon. 2/m : B2/b
8/H.17-30LennilenapeiteK6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2OTric.
8/H.17-40Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2OTric. 1 : P1
8/H.17-45Franklinphilite(K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2OTric.
8/H.17-50Parsettensite(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2OMon. 2/m : B2/m
8/H.17-55MiddendorfiteK3Na2Mn5Si12(O,OH)36 · 2H2OMon.
8/H.17-60Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon.
8/H.17-70Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.

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 BariumbannisteriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Matsubara S., Kato, A. (1989): A Barian Bannisterite from Japan. Mineralogical Magazine: 53: 85-87

Internet Links for BariumbannisteriteHide

Mineral and/or Locality  
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