Pumice (Dry)
Copyright/attribution: Natural History Museum, London
Copyright/attribution: National Museum of Ireland - Natural History
Description
Notes: Fragment of basaltic pumice, with circular vesicles. Crystals of plagioclase and other minerals can be observed.
Citations: Deep Sea Deposits, Report of the Scientific Results of the Exploring Voyage of HMS Challenger 1873-1876. Plate 1, Figure 8