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Millerite
Ferndale 8&9 Pits, Ferndale, Rhondda, Cynon, Taff, Wales, UK
Millerite, main spray 22mm.

The green alteration has often been described as morenosite, but analysis at the National Museum of Wales on a number of specimens failed to find it, returning at best a mixture. Morenosite is a yet unproven in the S Wales coalfield.

However, analysis of a particularly rich example from Llanbradach Colliery by my friend Prof. Pete Williams at the University of Western Sydney showed this, at least, to be nicklehehahydrite. (Author: ian jones)

Millerite
Ferndale 8&9 Pits, Ferndale, Rhondda, Cynon, Taff, Wales, UK
Millerite, main spray 22mm.

The green alteration has often been described as morenosite, but analysis at the National Museum of Wales on a number of specimens failed to find it, returning at best a mixture. Morenosite is a yet unproven in the S Wales coalfield.

However, analysis of a particularly rich example from Llanbradach Colliery by my friend Prof. Pete Williams at the University of Western Sydney showed this, at least, to be nicklehehahydrite. (Author: ian jones)

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