Description

Notes: Specimens in cream card tray with open corners. Handwritten label accompanying specimens reads "Siliceous masses occurring in a geyser deposit Devils riding school Ascension.". Another handwritten label reads "Siliceous masses occurring in a geyser depsoit Devils riding school Ascension The deposit occurs close to that containing nodular concretions + just above it". To see Oxford University Museum of Natural History's database go to http://www.oum.ox.ac.uk/collect/lifecoll2.htm