A collection of nine specimens, including, in particular, a fluorite on quartz from the Morvan, a torbernite, a pyromorphite, a haematite from Alsace, a goethite from the Aveyron and two barytes from the Gard (dimensions ranging from 1.5 x 4.5 x 2.5 cm to 6 x 12 x 7.5 cm – in their natural state)