Rock 365 : Day 132 : Fluorite and Heulandite
Day 132 : Fluorite and heulandite from Gibelbach, Fiesch, Oberwallis, Switzerland. Cotton collection, Keele.
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Rock 365 : Day 131 : Quartz on Fluorite
Day 131 : Quartz on fluorite from the Coalcleugh Mine, Coalcleugh, Northumberland. Cotton Collection, Keele.
Rock 365 : Day 130 : Barytes and Dolomite
Day 130 : Barytes and dolomite from Cumbria, UK. Cotton Collection, Keele.
Rock 365 : Day 129 : Tourmaline and Quartz
Day 129 : Tourmaline and quartz. Locality unknown. Keele collection.
Rock 365 : Day 128 : Fluorite and Calcite
Day 128 : Fluorite and calcite from the Mex-Tex Mine, New Mexico, USA. Cotton Collection, Keele.
Rock 365 : Day 127 : Calcite and Marcasite
Day 127 : Calcite and Marcasite from the Parc Mine, Llanrwst, North Wales. Cotton Collection, Keele.
Rock 365 : Day 126 : Pyrite and Quartz
Day 126 : Pyrite on a large euhedral quartz crystal. From St Agnes, Cornwall. Cotton Collection, Keele.
Rock 365 : Day 125 : Rubellite and Lepidolite
Day 125 : Rubellite (a variety of tourmaline) and lepidolite. Locality unknown. Cotton Collection, Keele.
Rock 365 : Day 124 : Magnetite and Pyrites
Day 124 : Magnetite and Pyrites from Quebec, Canada. Keele Collection.
Rock 365 : Day 123 : Wolframite
Day 123 : This is wolframite, a tungsten mineral (and hence W as the chemical symbol for tungsten). This specimen is from the Dolcoath Mine, Cambourne, Cornwall. Cotton Collection, Keele.