Colors of the Northern Pennines - UVc

 

From the North Pennine Orefield in Northern England comes this 8" wide collection. The plate of green fluorite is from the Rogerley Mine near Frosterley while the other rocks come from the Rampgill Mine near Nenthead, Cumbria about 20 miles away. The Rampgill mine is in the "Barite Zone" while the Rogerley mine is in the "Fluorite Zone". The two zones are sharply delineated and resulted from temperature gradients in the mineralizing hydrothermal solutions driven by the high heat flow from the buried Weardale granite.

 

See Geology of the North Pennines Orefield

 

Contains:

Witherite (FL+PHOS White >UVabc)

Fluorite (FL+PHOS Blue >UVabc)

Calcite (FL+PHOS Pink >UVbc)

 

Shown under UVc light.

 

Key:

WL = White light (halogen + LED)

FL = Fluoresces

PHOS = Phosporescent

UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)

'>' = "stimulated by:", '!' = "bright", '~' = "dim"

 

 

Obtained from Polman Minerals

 

Series best viewed in Light Box mode using Right and Left arrows to navigate.

Photostream best viewed in Slideshow mode (in the dark).

 

18 Watt Triple Output UV lamp from Polman Minerals - Way Too Cool UV lamps

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