The present study is devoted to the extraction of rare-earth metals (REMs) from a high-silica ore found in one of the deposits in Kazakhstan. The ore was processed in a mixture with sulfuric acid at 200 degrees C (sulphatization) and subsequently followed by water leaching of the sulphate product (sinter), REMs were extracted into the solution. Precipitation of the REMs-containing hydrate product from the sulfate solution was carried out with sodium hydroxide. In order to obtain the REMs-containing nitrate solution, the precipitate was dissolved in nitric acid. REMs solvent extraction from nitrate solutions was carried out with tributyl phosphate (TBP).