To quote Stephenson and Gould in British regional geology: the Grampian Highlands, fourth edition, 2007 when discussing the features you might expect to see in this part of Scotland,  'Metagreywackes, siliceous psammites and fine-grained quartzites are interbedded with the predominant well-foliated green schists containing abundant chlorite, epidote, biotite and albite porphyroblasts.' Well, quite, I couldn't have put it better myself.  When I was young we lived in London and I would often head in the school holidays to the museums in South Kensington. The big draw these days is the Natural History museum but back then dinosaurs weren't quite as popular as they are today and much of the ground floor was a series of somewhat lacklustre dioramas that were populated with a cast of vaguely unsettling stuffed animals.   Around the corner in Exhibition Road was the Science museum which became a big favourite with me mainly due to the number of interactive displays. The joy