Fluorite and Calcite from Wet Grooves Mine, North Yorkshire

Fluorite and Calcite from Wet Grooves Mine, Carperby-cum-Thoresby, Richmondshire, North Yorkshire, England

Nice specimen of fluorite and calcite from Wet Grooves Mine in North Yorkshire.

Slightly fluorescent in two different wavelengths - under 255nm a red fluorescence can be seen in some of the calcite crystals. Under 365nm, the fluorite has a slight light purple glow - 255nm is the more interesting of the two but not a common wavelength for beginner collectors.