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FLUORITE CRYSTAL ROGERLEY

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FLUORITE CRYSTAL ROGERLEY

Stunning cute specimen Fluorite Crystal Rogerley.  Three pics indoor (green), outdoor (green and blue) and LW UV light (blue).  Fluorite from the Rogerley Mine is highly sought after for its daylight fluorescence and the top quality crystals it forms.  This piece is no exception, showing a stunning emerald green colour indoors and turning electric blue when under UV light and some where in between in day light (as the sun naturally radiates UV light).  The daylight fluorescence is particularly marked in overcast weather, but very noticeable in any conditions.  Photos are taken both indoors and under Long Wave UV light.  This Crystal has good Cubic form with a penetrating twin.

Location:
Rogerley Mine, County Durham, England.

Dimensions:
4.2cm x 3.1cm x 2.5cm, 44g.

 

Calcium Fluoride: CaF2

 

 

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FLUORITE CRYSTAL ROGERLEYFLUORITE CRYSTAL ROGERLEY

Stunning cute specimen Fluorite Crystal Rogerley.  Three pics indoor (green), outdoor (green and blue) and LW UV light (blue).  Fluorite from the Rogerley Mine is highly sought after for its daylight fluorescence and the top quality crystals it forms.  This piece is no exception, showing a stunning emerald green colour indoors and turning electric blue when under UV light and some where in between in day light (as the sun naturally radiates UV light).  The daylight fluorescence is particularly marked in overcast weather, but very noticeable in any conditions.  Photos are taken both indoors and under Long Wave UV light.  This Crystal has good Cubic form with a penetrating twin.

Location:
Rogerley Mine, County Durham, England.

Dimensions:
4.2cm x 3.1cm x 2.5cm, 44g.

 

Calcium Fluoride: 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.

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