Rock 365 : Day 242 : Granophyre
Day 242 : A granophyre, found as an erratic block one metre down in glacial deposits in the foundations of stage 3 of the geology building at Keele.
Day 242 : A granophyre, found as an erratic block one metre down in glacial deposits in the foundations of stage 3 of the geology building at Keele.
Day 241 : This is the Ediacaran age Ercall Microgranophyre from the Ercall Quarries in Staffordshire. Keele collection.
Day 240 : Devonian porphyritic microgranite form Dufton Pike, Cumbria. Keele collection.
Day 239 : Picrite (high magnesium olivine basalt) from Pico, Azores, Portugal. Keele collection.
Day 238 : Mudcracks and arthropod tracks, from Normandy, France. Keele collection.
Day 237 : A Rhynchosaurus footprint from the Bromsgrove Sandstone (Keuper Waterstones) at Grinshill, Cheshire, England. Keele collection.
Day 236 : A polymict conglomeratic molasse with a calcareous cement from quarry NE of Virey-le-Grand, France. Keele collection.
Day 235 : A garnet amphibolite from Bjordammen, Telemark, Norway. Keele collection.
Day 234 : This is the reverse side of the St Austell Granite sample shown on Day 231, showing a feldspar, quartz and muscovite pegmatite. From the Tregarden Quarry, Luxulyan, Cornwall, England. Keele collection.
Day 233 : This a volcanic agglomerate (Builth Wells Volcanics) from the Middle Ordovician of Wales. Personal collection.