Major and trace elements in meimechites – rarely occurring volcanic rocks: developing optimal analytical strategy PashkovaGalina V. PanteevaSvetlana V. UkhovaNatalia N. ChubarovVictor M. FinkelshteinAlexandr L. V. IvanovAlexei AsavinAlexey M. 2018 Comparing the results obtained by ‘wet chemistry’ and XRF methods; ICP-MS data for meimechite samples; ICP-MS analysis of reference materials.