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- Povondraite abstract "Povondraite is a rare silicate mineral from the tourmaline group with formula: NaFe3+3(Fe3+4,Mg2)(BO3)3Si6O18(OH)3O. It is a dark brown to black nearly opaque mineral with a resinous to splendent luster. It crystallizes in the trigonal crystal system as equant, distorted prisms with trigonal pyramid terminations.It occurs as rare fracture and cavity encrustations within schists derived from sedimentary rocks. Associated minerals include quartz, potassium feldspar, muscovite, schorl, riebeckite and magnesite.Discovered at the San Francisco mine, near Villa Tunari (in Alto Chapare), Bolivia, in 1976, originally it was called ferridravite, for the composition and the assumed relationship to dravite, i.e., "ferric dravite" . However later investigations yielded a new empirical formula which had no relation to the dravite. This called for renaming, and the new name, after Pavel Povondra, a mineralogist at the Charles University in Prague, was approved by the International Mineralogical Association.".
- Povondraite wikiPageID "32487685".
- Povondraite wikiPageRevisionID "557991972".
- Povondraite hasPhotoCollection Povondraite.
- Povondraite subject Category:Cyclosilicates.
- Povondraite subject Category:Iron_minerals.
- Povondraite subject Category:Manganese_minerals.
- Povondraite subject Category:Sodium_minerals.
- Povondraite subject Category:Trigonal_minerals.
- Povondraite type Abstraction100002137.
- Povondraite type BorateMinerals.
- Povondraite type IronMinerals.
- Povondraite type ManganeseMinerals.
- Povondraite type Material114580897.
- Povondraite type Matter100020827.
- Povondraite type Mineral114662574.
- Povondraite type Part113809207.
- Povondraite type PhysicalEntity100001930.
- Povondraite type Relation100031921.
- Povondraite type SodiumMinerals.
- Povondraite type Substance100019613.
- Povondraite type TrigonalMinerals.
- Povondraite comment "Povondraite is a rare silicate mineral from the tourmaline group with formula: NaFe3+3(Fe3+4,Mg2)(BO3)3Si6O18(OH)3O. It is a dark brown to black nearly opaque mineral with a resinous to splendent luster. It crystallizes in the trigonal crystal system as equant, distorted prisms with trigonal pyramid terminations.It occurs as rare fracture and cavity encrustations within schists derived from sedimentary rocks.".
- Povondraite label "Povondraite".
- Povondraite label "Povondraite".
- Povondraite label "Povondraíta".
- Povondraite label "Povondraïet".
- Povondraite sameAs Povondraíta.
- Povondraite sameAs Povondraite.
- Povondraite sameAs Povondraïet.
- Povondraite sameAs m.0h1cv09.
- Povondraite sameAs Q1889038.
- Povondraite sameAs Q1889038.
- Povondraite sameAs Povondraite.
- Povondraite wasDerivedFrom Povondraite?oldid=557991972.
- Povondraite isPrimaryTopicOf Povondraite.