• Tapiolite: Mineral information, data and localities.

    www.mindat.org/min-3887.html A name for chemically unanalysed members of the Tapiolite-(Fe)-Tapiolite-(Mn) Series. The original iron-dominant tapiolite material came from "near Kulmala Farm", Sukula, Tammela, Etelä-Suomen Lääni, Finland.
  • Tapiolite - Wikipedia

    en.wikipedia.org/wiki/Tapiolite-(Mn) Tapiolite [(Fe, Mn)(Nb, Ta) 2 O 6] is a black mineral series that is an ore of niobium and tantalum.The tapiolite group includes tapiolite-(Fe) or ferrotapiolite and tapiolite-(Mn) or manganotapiolite. Tapiolite-(Fe) is by far the more common of the two.
  • Tapiolite-(Mn) Mineral Data

    webmineral.com/data/Tapiolite-(Mn).shtml Tapiolite-(Mn) Crystallography: Axial Ratios: a:c = 1:1.94708 : Cell Dimensions: a = 4.762, c = 9.272, Z = 2; V = 210.26 Den(Calc)= 7.62 : Crystal System:
  • Tapiolite-(Mn): Mineral information, data and localities.

    zh.mindat.org/min-2523.html Tapiolite-(Fe)-Tapiolite-(Mn) Series. - 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.
  • Verification - Mindat.org

    www.mindat.org/min-2523.html Large number of pages viewed. While we don't want to limit you viewing as many pages as you would like on mindat.org, we do need to prevent people from automated downloads of our content.
  • (PDF) Hidden story of tapiolite - ResearchGate

    www.researchgate.net/publication/263119628_Hidden_story_of_tapiolite Tapiolite is a tetragonal modification of AB 2 O 6 , with tapiolite-(Fe) being much more abundant than tapiolite-(Mn). A miscibility gap exists between these phases and CGM, ...
  • Tapiolite-(Fe) Mineral Data

    webmin.mindat.org/data/Tapiolite-(Fe).shtml General Tapiolite-(Fe) Information : Chemical Formula: (Fe++,Mn++)(Ta,Nb)2O6 : Composition: Molecular Weight = 500.02 gm Tantalum 68.76 % Ta 83.96 % Ta 2 O 5: Manganese 3.30 % Mn 4.26 % MnO: Niobium 0.93 % Nb 1.33 % Nb 2 O 5: Iron 7.82 % Fe 10.06 % FeO: Oxygen 19.20 % O: 100.00 % 99.60 % = TOTAL OXIDE
  • Tantalite

    hyperleap.com/topic/Tantalite The mineral group tantalite [(Fe, Mn)Ta 2 O 6 ] is the primary source of the chemical element tantalum. Tantalum, always together with the chemically similar niobium, occurs in the mineral groups tantalite, columbite and coltan (a mix of columbite and tantalite, though not recognised as a separate mineral species).
  • Tantalite - Wikipedia

    en.wikipedia.org/wiki/Tantalite The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum.It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides. However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite's 5.2).
  • Sun, S.S. and McDonough, W.F. (1989) Chemical and Isotopic ...

    www.scirp.org/(S(i43dyn45teexjx455qlt3d2q))/reference/ReferencesPapers.aspx Columbite group minerals are represented mostly by columbite-(Mn) and tantalite-(Mn), with Mn/(Mn+Fe) ratio ranging from 0.42 to 0.89. Ixiolite, wodgnite and tapiolite-(Mn) were found only in the FAG indicating the final stages of the evolution of parental granitic magma.