Day 192 : Crinoidal Limestone from Longcliffe Quarry, Derbyshire. My backgarden limestone collection.

Day 191 : Sphalerite (zinc ore) from the Trelogan Mine, Clywd, Wales. Cotton Collection, Keele.

Day 190 : This is the antimony sulphide mineral stibnite. The old Greek name for the mineral “stibi” gave rise to the Latin “Stibium”, the former name of the element antimony (Sb).

Day 189 : Molybdenite from the Bushveld, South Africa. Keele Collection.

Day 188 : Bismuth from Malaya. Keele Collection.

Day 187 : Gold Matrix from the Transvaal, South Africa. Cotton Collection, Keele.

Day 186 : Native copper from the Monte Romero Mine, Almonáster la Real, Huelva, Spain. Cotton Collection, Keele.

Day 185 : Graphite from the Cranston Graphite Mine, Sockanosset, Rhode Island, USA. Cotton Collection, Keele.

Day 184 : Silver Ore, Australia. Keele Collection

Day 183 : Native silicon. Cotton Collection, Keele.