Specimen of Rogerley Mine Fluorite Crystals from Weardale. This cluster has good crystal formation. We have taken photos indoors, outside and also under long wave ultraviolet light. This particular specimen shows daylight fluorescence. Grab a piece of geological history now and spend hours admiring the amazing cubic form and fluorescent properties of this great English mineral specimen. We have stocked this incredible green Fluorite since we first started dealing minerals many moons ago. We stock a range of pieces from different pockets at the mine. The mine has now closed down and pieces like this are already rising in value.
Bluebirds Pocket Zone 2, Rogerley Mine, UK.
Dimensions:8.5cm x 6.7cm x 5.6cm, 313g.
It’s Fluorite, Jim, but not as you know it! There is a reason people go nuts for Fluorite from this mine in particular – Daylight Fluorescence. Fluorite was named in 1797 by Carlo Antonio Galeani Napione from the Latin, fluere “to flow” for its use as a flux. The element fluorine also derives its name from Fluorite, a major source for the element. The daylight fluorescence in this mineral is suspected to be caused by the inclusion of Rare Earth Elements REE, minerals including phosphates Monazite and Xenotime and Fluorocarbonates mainly Synchysite. Avoid long exposure to bright lights.