Uher P. auteur aut IRD Giuliani Gaston auteur aut IRD Szakall S. auteur aut IRD Fallick A. auteur aut IRD Strunga V. auteur aut IRD Vaculovic T. auteur aut IRD Ozdin D. auteur aut IRD Greganova M. auteur aut IRD text journalArticle eng text/pdf born digital access Blue, grey-pink and pink sapphires from the Cerova Highlands, Western Carpathians (southern Slovakia) have been studied using CL, LA-ICP-MS, EMPA, and oxygen isotope methods. The sapphire occurs as (1) elastic heavy mineral in the secondary sandy filling of a Pliocene alkali basaltic maar at Hajnacka, and (2) crystals in a pyroxene-bearing syenite/anorthoclasite xenolith of Pleistocene alkali basalt near Gortva. Critical evaluation of compositional diagrams (Fe, Ti, Cr, Ga, Mg contents, Fe/Ti, Cr/Ga, Ga/Mg ratios) suggests a magmatic origin for elastic blue sapphires with lower Cr and Mg, but higher Fe and Ti concentrations in comparison to the grey-pink and pink varietes, as well as similar compositional trends with blue sapphire from the Gortva magmatic xenolith. Moreover, blue sapphires show similar delta O-18 values: 5.1 parts per thousand in the Gortva xenolith, 3.8 and 5.85 parts per thousand in the Hajnacka placer, closely comparable to mantle to lower crustal magmatic rocks. On the contrary, pink and grey-pink sapphires show higher Cr and Mg, but lower Fe and Ti contents and their composition points to a metamorphic (metasomatic) origin. specialized Western Carpathians Slovakia Hajnacka Gortva CL LA-ICP-MS EMPA oxygen isotopes placer alkali basalts anorthoclasite xenolith corundum sapphire SLOVAQUE REPUBLIQUE 064 63 1 71-82 2012 1335-0552 https://www.documentation.ird.fr/hor/fdi:010055733 10.2478/v10096-012-0005-7 1335-0552 [F B010055733] https://www.documentation.ird.fr/hor/fdi:010055733 https://www.documentation.ird.fr/intranet/publi/2012/04/010055733.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2012-05-04 2022-03-27 fdi:010055733 fre