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Day 156 : An acid tuff from the Åmål supracrustals. Quartz, plagioclase, alkali feldspar, muscovite and biotite. Dalsland, Sweden. Keele collection.

Day 155 : In the village of Kelsall, Cheshire for the Chester Folk festival.  This is the Triassic Helsby Sandstone exposure on Chester Road.

Day 154 : The oldest Åmål granite. A recrystalised alkali granite with alkali feldspar, plagioclase, quartz, biotite, muscovite and epidote. Åmål, Sweden. Keele collection.

Day 153 : The Ellero Conglomerate. Clasts of alkali feldspars and quartz in matrix of quartz, plagioclase, biotite, muscovite and epidote. Dalsland, Sweden. Keele collection.

Day 152 : Early Palaeolithic ‘Clactonian’ style trimmed flint flake found in Pleistocene river gravels. Locality unknown, Keele collection.

Day 151 : Palaeolithic flint scraper from Warren Hill, East Anglia. Keele collection.

Day 150 : A visit to Leeds University where the geology department foyer is paved with Borrowdale Volcanic ‘Green Slate’, reworked volcanic tuffs redeposited in shallow water. High Fell Quarry, Cumbria, England.

Day 149 : Neolithic stone handaxe. Locality unknown, Keele collection.

Day 148 : Middle Acheulean biface flint handaxe. Barnfield Pit, Swanscombe, Kent, England.  Keele collection.

Day 147 : Upper Palaeolithic ‘biface’ flint with secondary flaking from Carriere Bernard, Ciply, Mons, Belgium. Keele collection.