Uncategorized

Day 222 : Nephrite, or New Zealand jade. Keele collection.

Day 221 : Hornblende. Locality unknown, Keele collection.

Day 220 : In Hartlepool to see the Tall Ships. These are dolomitic limestones the Permian Zechstein Group at Headland.

Day 219 : Out and about in the northeast of England. This is the Permian age Yellow Sands Formation (who says the BGS have no imagination in naming formations?) at Tynemouth in the cliffs below the priory and castle.

Day 218 : Staying in Durham Castle. Here is one of the sandstone blocks in a wall showing classic cross-bedding. Almost certainly this is the local Coal Measures sandstone that was extensively quarried on the crest on the incised meander loop on which the castle and cathedral now stand, the …

Day 217 : Bornite from the Chambishi Open Pit, Copperbelt Province, Zambia. Keele collection.

Day 216 : Bornite and chalcopyrite. Locality unknown. Keele collection.

Day 215 : Pyrargyrite – literally ‘fire-silver’ is a silver-antinomy sulphide. Locality unknown. Keele Collection.

Day 214 : Pyrite. Locality unknown. Keele collection.

Day 213 : Chalcopyrite from Zimbabwe. Keele collection.