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Day 342 : A garnet in a sillimanite-cordierite gneiss from Herbon Farm, near Arradon Brittany, France. Keele collection.

Day 341 : A garnet within the Conquet Schists, from north of Pointe de St Mathieu, Brittany, France. Keele collection.

Day 340 : An olivine dolerite from south of Camas Malag, Skye, Scotland. Keele collection.

Day 339 : This is lizardite serpentine from the Lizard Peninsula in Cornwall, England. The term bastite is used where it forms pseudomorphs of other minerals such as enstatite, olivine and pyroxene. Keele collection.

Day 338 : Picrite (olivine and augite basalt) from La Bette, Guernsey. Keele collection.

Day 337 : An augite tephrite from Italy. Keele collection.

Day 336 : Biotite pyroxenite from Loch Salachaidh, east of Bettyhill (Am Blaran Odhar), Thurso, Scotland. Keele collection.

Day 335 : Kimberlite, a potentially diamond bearing ultramafic igneous rock from the mantle. This specimen from the Wesselton Diamond Mine, Kimberley, South Africa. Keele collection.

Day 334 : Dunite (predominantly olivine) from North Carolina, USA. Keele collection.

Day 333 : Essexite or nepheline monzogabbro. This rock was quarried to make curling stones. From Craighead Quarry, Crawfordjohn, South Lanarkshire, Scotland. Keele collection.