Abstract
The occurrence of sulfate minerals associated with the pyrite ores of the southern Apuan Alps has been known since the 19th century but modern mineralogical studies started only in the last decade. Sulfate assemblages were identified in all the pyrite ore deposits from the studied area but the more impressive associations were discovered in the Fornovolasco and Monte Arsiccio mines. Their study allowed to improve the knowledge of the sulfate crystal-chemistry and to achieve a better understanding of the acid mine drainage (AMD) systems associated with pyrite oxidation. More than 20 different mineral species were identified and, among them, four sulfates (volaschioite, giacovazzoite, magnanelliite, and scordariite) have their type localities in the pyrite ore deposits of the Apuan Alps. A review of the mineralogical results of a ten-year-long study is given here.
Highlights
IntroductionThe occurrence of secondary sulfate assemblages associated with the pyrite ore bodies from the
The occurrence of secondary sulfate assemblages associated with the pyrite ore bodies from theApuan Alps (Tuscany, Italy) has been reported since the second half of the 19th century (e.g., [1]).few species were described and some of them were doubtful
Since the second half of the 2000s, the mineralogical study of the pyrite ± baryte ± iron oxide ore deposits from the southern Apuan Alps led to the identification of some interesting sulfate assemblages in which rare or even new mineral species were identified
Summary
The occurrence of secondary sulfate assemblages associated with the pyrite ore bodies from the. Apuan Alps (Tuscany, Italy) has been reported since the second half of the 19th century (e.g., [1]). Since the second half of the 2000s, the mineralogical study of the pyrite ± baryte ± iron oxide ore deposits from the southern Apuan Alps led to the identification of some interesting sulfate assemblages in which rare or even new mineral species were identified. The sulfate assemblages from the Fornovolasco mine were the first to be systematically studied using modern analytical techniques, spurred by the identification of the new mineral species volaschioite, Fe3+ 4 (SO4 )O2 (OH)6 ·2H2 O [2]. The results of a ten-year-long study are reviewed and summarized, along with some still unpublished results
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