• Semenovite Mineral Data

    webmineral.com/data/Semenovite.shtml PE Semenovite = 84.76 barns/electron U=PE Semenovite x r electron = 255.67 barns/cc. Radioactivity: GRapi = 15,211.68 (Gamma Ray American Petroleum Institute Units) Concentration of Semenovite per GRapi unit = 65.74 (PPM) Semenovite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
  • Semenovite: Mineral information, data and localities.

    www.mindat.org/min-10988.html Semenovite mineral data, information about Semenovite, its properties and worldwide locations.
  • Semenovite — a new mineral from the Ilímaussaq alkaline ...

    www.sciencedirect.com/science/article/pii/0024493772900679 Semenovite some- times occurs together with extremely thin hexagonal plates of lithium-mica. Semenovite is a late mineral in the vein, younger than or in some cases contemporary with the epididymite and the last lithium-m~ica, and only prior to natrolite, which in one case was found as a small well-developed crystal on a crystal of semenovite.
  • Semenovite Mineral Data - webmin.mindat.org

    webmin.mindat.org/data/Semenovite.shtml Semenovite Crystallography: Axial Ratios: a:b:c =1.0031:1:0.7186 : Cell Dimensions: a = 13.879, b = 13.835, c = 9.942, Z = 2; V = 1,909.02 Den(Calc)= 3.26
  • Semenovite-(Ce) Mineral Specimen For Sale

    www.dakotamatrix.com/products/5408/semenovite-ce Semenovite-(Ce) - It's hard to tell but these are excellent, well-formed brownish-orange tetragonal dipyramids - pseudo-octahedral crystals to 1mm. Identified by Dr. Igor Pekov. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Semenovite-(Ce) from Taseq Slope, Ilímaussaq complex ...

    www.mindat.org/locentry-71301.html Semenovite-(Ce) Formula: Na 8 Ca 2 FeBe 6 Ce 2 Si 14 O 40 (OH) 4 F 4: Confirmation: Validity: Valid - Type Locality: References: References: Petersen O V, Rönsbo J G (1972) Semenovite - a new mineral from the Ilimaussaq alkaline intrusion, south Greenland, Lithos 5, 163-173: Associated Minerals Based on Photo Data: Epididymite
  • Semenovite-(Ce) (Na Ca) (Ce La) (Fe2+ Mn)(Si Be) (O OH F ...

    www.handbookofmineralogy.org/pdfs/semenovite-(Ce).pdf Semenovite-(Ce) (Na;Ca)9(Ce;La)2(Fe2+;Mn)(Si;Be)20(O;OH;F)48 °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Orthorhombic, pseudotetragonal. Point Group: 2=m 2=m 2=m: As pseudotetragonal dipyramidal crystals, to 1 cm, and coarsely crystalline aggregates.
  • Semenovite-(Ce) Mineral Specimen For Sale

    www.dakotamatrix.com/products/15401/semenovite-ce Semenovite-(Ce) - Cream colored orthorhombic dipyramids to 1mm. Semenovite-(Ce) is an extremely rare cerium silicate with beryllium. It is only found at one locality. Identified by r. Igor Pekov. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Semenovite — a new mineral from the Ilímaussaq alkaline ...

    ui.adsabs.harvard.edu/abs/1972Litho...5..163P/abstract Semenovite, (RE, Ca, Mn, Na) 12 (Be, Si(F, OH,))) 8 (Si 3 O 10 ) 4 · H 2 O occurs in cavities in one epi-eudidymite bearing albitite on the Taseq Slope, Ilímaussaq, Greenland. The size of the major part of the apparently tetragonal bipyramidal crytals ranges from 0.1 to 1.0 mm. Colour: brown, reddish brown or grey.
  • dict.cc | semenovite Ce | Czech-English Dictionary

    csen.dict.cc English Translation for semenovite Ce - dict.cc Czech-English Dictionary