FLUORITE CLUSTER ROGERLEY MINE

FLUORITE CLUSTER ROGERLEY MINE

Fluorite Cluster Rogerley Mine.  This is a decent sized cluster with good daylight fluorescence.  We have held the price down on this one so it is very affordable and can be tucked away into your collection for safe keeping.  This cluster has good crystal coverage on top, with a prominent twinned crystal on one end.  I have taken photos indoors, outside on an overcast day and also under long wave ultraviolet light inside a lit shop.  Grab a piece of geological history now and spend hours admiring the amazing cubic form and fluorescent properties of this great English mineral specimen.  Like we do!  We have stocked this incredible 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.

Location:
Penny’s Pocket, Rogerley Mine, UK.

Dimensions:
5.5cm x 9.3cm x 5cm, 326g.

Fluorite: CaF₂

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 term fluorescence is derived from Fluorite, which will often markedly exhibit this effect. The element fluorine also derives its name from Fluorite, a major source for the element.  The daylight fluorescence in this particular 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.