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Day 212 : Chalcopyrite from the Roan Antelope (Mufulira) Mine, Copperbelt Province, Zambia. Keele collection

Day 211 : Algal limestone. Locality unknown. Keele collection.

Day 210 : Laminated sandstone and mudstone from a core section. Locality unknown. Keele collection

Day 209 : Cinnabar, from Spain. Keele Collection

Day 208 : This is Bornite, a copper iron sulphide, sometimes known as peacock ore for its iridescent blues, greens and purples. From the Mufulira Mine in the Copperbelt Province of Zambia. Cotton collection, Keele.

Day 207 : Orpiment from Manhattan District, Nye County, Nevada, USA. Keele Collection.

Day 206 : Cinnabar. Locality unknown. Keele collection.

Day 205 : Chalcosite, copper sulphide, from Cornwall, England. Keele Collection

Day 204 : Pentlandite, iron nickel sulphide. From the Pilanesberg Nickel Mine, South Africa. Keele Collection.

Day 203 : Galena. Locality unknown. Keele collection.