Studium přechodných členů řady kintoreit-segnitit-beudantit a doprovodných fosfátů z lokality Vlastkovec u Slavonic (Česká republika)

Abstract

Secondary phosphates and arsenates of alunite supergroup, kintoreite, segnitite, beudantite and plumbogummite in association with natrodufrénite, were found on newly collected samples from Stříbrný vrch Hill near Vlastkovec, South Bohemia region (Czech Republic). Minerals were detected on three samples of quartz vein in three different phosphate/arsenate associations. Sample 1: kintoreite-segnitite-beudantite, sample 2: kintoreite-plumbogummite and sample 3: kintoreite-natrodufrénite. The minerals of the alunite supergroup have been studied by means of WDS, PXRD analyses, IR and Raman spectroscopy. Increased (CO3)2- contents in the structure of kintoreite and plumbogummite were detected by IR and Raman spectroscopy.