• Ferri-clinoholmquistite Mineral Data

    webmineral.com/data/Ferri-clinoholmquistite.shtml Ferri-clinoholmquistite Crystallography: Axial Ratios: a:b:c =0.5308:1:0.2956 : Cell Dimensions: a = 9.472, b = 17.844, c = 5.276, Z = 2; beta = 101.97° V = 872.35 ...
  • (PDF) Ferri-clinoholmquistite, Li 2 (Fe (super 2+) ,Mg) 3 ...

    www.researchgate.net/.../279441780_Ferri-clinoholmquistite_Li_2_Fe_super_2_Mg... Ferri-clinoholmquistite, Li 2 (Fe (super 2+) ,Mg) 3 Fe (super 3+) 2 Si 8 O 22 (OH) 2 , a new B Li clinoamphibole from the Pedriza Massif, Sierra de Guadarrama, Spanish Central System
  • Ferri-clinoholmquistite Mineral Data

    webmin.mindat.org/data/Ferri-clinoholmquistite.shtml PE Ferri-clinoholmquistite = 7.02 barns/electron U=PE Ferri-clinoholmquistite x r electron = 22.01 barns/cc. Radioactivity: GRapi = 1.97 (Gamma Ray American Petroleum Institute Units) Concentration of Ferri-clinoholmquistite per GRapi unit = 50.87 (%) Estimated Radioactivity from Ferri-clinoholmquistite
  • Ferri-clinoholmquistite, Li(Fe ,Mg) Fe Si O (OH) , a new ...

    www.minsocam.org/msa/ammin/toc/Articles_Free/1998/Caballero_p167-171_98.pdf Ferri-clinoholmquistite, Li 2(Fe21,Mg) 3 Fe Si31 8O 22 (OH) 2, a new BLi clinoamphibole from the 2 Pedriza Massif, Sierra de Guadarrama, Spanish Central System JOSE´ M. CABALLERO,1 ANGELES MONGE,2 ANGEL LA IGLESIA,3 AND FERNANDO TORNOS4 1 Departamento de Petrologı´a y Geoquı´mica, Facultad CC. Geolo´gicas, U.C.M., Ciudad Universitaria ...
  • (PDF) The (Mg,Fe 2+ ) substitution in ferri ...

    www.researchgate.net/.../258541065_The_MgFe_2_substitution_in_ferri-clinoholm... Key-words: ferri-clinoholmquistite, synthesis, cell-parameters, infrared and Mössbau er spectroscopy, short-range order. Introduction. Holmquistite is a member of the Mg-Fe-Mn-Li amphibole.
  • A Mössbauer and FTIR study of synthetic amphiboles along ...

    ui.adsabs.harvard.edu/abs/2005PCM....32..103D/abstract A series of amphiboles along the magnesioriebeckite— Na 2 Mg 3 Fe 3+ 2 Si 8 O 22 (OH) 2 ferri-clinoholmquistite— Li 2 Mg 3 Fe 3+ 2 Si 8 O 22 (OH)2 - join, defined by the B Li B Na -1 > exchange vector, were hydrothermally synthesized at 700°C, 0.4 GPa, NNO + 1 redox conditions.
  • Synthesis, crystal structure and crystal chemistry of ...

    link.springer.com/10.1007/s00269-004-0402-2 This work reports the synthesis of ferri-clinoholmquistite, nominally Li2(Mg3Fe3+2)Si8O22(OH)2, at varying f O 2 conditions. Amphibole compositions were characterized by X-ray (powder and single-crystal) diffraction, microchemical (EMPA) and spectroscopic (FTIR, Mössbauer and Raman) techniques. Under reducing conditions (≤ NNO+1, where NNO = Nickel–Nickel oxide buffer), the amphibole ...
  • A Mössbauer and FTIR study of synthetic amphiboles along ...

    core.ac.uk/display/52767399 A series of amphiboles along the magnesioriebeckite—Na2Mg3Fe3+ 2Si8O22(OH)2– ferri-clinoholmquistite—Li2Mg3Fe3+ 2Si8O22(OH)2 - join, defined by the BLiB Na–1 exchange vector, were hydrothermally synthesized at 700°C, 0.4 GPa, NNO + 1 redox conditions. Powder XRD and SEM-EDAX showed a very high (> 90%) amphibole yield for all samples.
  • A Mössbauer and FTIR study of synthetic amphiboles along ...

    link.springer.com/article/10.1007/s00269-005-0451-1 A series of amphiboles along the magnesioriebeckite— Na2Mg3Fe3+ 2Si8O22(OH)2– ferri-clinoholmquistite— Li2Mg3Fe3+ 2Si8O22(OH)2 - join, defined by the BLiB Na−1 exchange vector, were hydrothermally synthesized at 700°C, 0.4 GPa, NNO + 1 redox conditions. Powder XRD and SEM-EDAX showed a very high (> 90%) amphibole yield for all samples.
  • The (Mg,Fe2+) substitution in ferri-clinoholmquistite, Li2 ...

    www.academia.edu/.../The_Mg_Fe_SUP_2_SUP_substitution_in_ferri-clinoholmquist... The (Mg,Fe2+) substitution in ferri-clinoholmquistite, Li2(Mg,Fe2+)3Fe3+2Si8O22(OH)2