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Quenched tholeiitic glasses and glassy rims of tholeiitic lava flows and pillow lavas from the neovolcanic rift zone on Iceland (Reykjanes and Hengill fissure swarms) contain olivine phenocrysts (Fo 87-91 ) with abundant primary glass inclusions. These inclusions and host glasses were analyzed by ion microprobe for boron concentrations and isotopic compositions. Inclusions...
An integrated major element, trace and rare earth element, and stable isotope (B, Si, O and S) study has been carried out on the Houxianyu borate deposit, eastern Liaoning, China. The present-day mineralogy of the deposit is closely similar to that of magnesian skarn deposits and the borates are underlain by granite; however, the geochemical and isotopic evidence does not favour a skarn-type origin...
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