Uncategorized

Day 102 ; Descloizite, a lead zinc vandate hydroxide, from the DR Congo. Keele Collection

Day 101 : Pyromorphite, a lead chlorophosphate, from the Little Giant Mine, Mullan, Idaho.  Keele collection.

Day 100 : Well, I didn't think I'd make it as far as day 100 of Rock365.  This is the Chatsworth Grit, quarried at Mow Cop on the boundary between Cheshire and Staffordshire. On the edge of the quarry is Mow Cop 'Castle', actually a summerhouse, built from the local stone.

Day 99 : This is Campyllite from the Roughtengill Mine in the Caldbeck Fells of Cumbria.  It is a lead arsenate mineral – I think I'll go and wash my hands now!

Day 98 : Back out training for Easter field course, 32km today finishing off the Gritstone Trail. These are the Bowstones, carved from local gritstone in the 9th or 10th Century AD, they were the shafts supporting Anglo-Saxon crosses.

Day 97 : This is number one on the Mohs hardness scale – talc.  This sample from Kennack, Cornwall.  Keele collection.

Day 96 : Out ‘training’ for Easter fieldwork by walking part of the Gritstone Trail through Cheshire.  This is the quarry face at Tegg’s Nose showing the Carboniferous deltaic gritstones. This particular gritstone is the Chatsworth Grit (or Rivelin Grit or Second Grit), Bashkirian (or Namurian) in age [will someone …

Day 95 : This is the phosphate mineral, apatite.  This sample is from Durango, Mexico. Cotton Collection, Keele. 

Day 94 : Lazulite, a magnesium phosphate. Often confused with lapis lazuli or azurite because of the colour. From Lincoln County, Georgia, USA.

Day 93 : Chrysocolla, a copper silicate, from Cornwall.