The Rock Library is an online resource on minerals and rocks operated by The Royal School of Mines, Imperial College London.
London, England
Joined December 2016
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Gneissose banding and pegmatite in an Archean granite gneiss from the Pilbara craton, Australia. These diapirs squeeze the greenstone belts.
Pyrolucite (manganese oxide) in a synsedimentary breccia formed as an Archean palaeosol on dolomite. From Pilbara, Australia.
Ripple cross lamination with hematite in the 2.5 billion year banded iron formation at Paraburdoo, Pilbara, Australia. @ImperialRSM
Conical stromatolites in the 3.43 billion year old Strelley Pool Chert in Pilbara, Australia. Old critters! @ImperialRSM
Archean jasperite at Marble Bar, Pilbara, Australia. A 3.46 billion year old chert. @ImperialRSM
Normal faults in Triassic sediments on a wavecut platform east of Watchet, Somerset. Seeing geology by drone. @ImperialRSM
Amphibolite with folded veins of quartz, feldspar and hornblende. St Paul's underground station, London. @ImperialRSM
Every day the Rock Library is attacked by hackers. So sorry to all the students and staff who rely on us. We are repairing malicious damage.
F2 folds with crenulation cleavage in black phyllite and metasiltstone, Falmouth, Cornwall. #fieldworkfriday for the RSM's Paul Garrard
Like a knife through butter. Cutting a slice through a basalt with a mantle xenolith - using a rock saw to make a #ThinSectionThursday