• Redgillite With Langite
  • Redgillite With Langite
  • Redgillite With Langite

Redgillite With Langite

ID: CC1051

A rich example of the fairly newly described mineral Redgillite (described in 2005). Redgillite is closely related to members of the basic Copper Sulphates family such as Langite, and is chemically similar to Montetrisaite, a new mineral described in 2007. The example we have was collected in 1986 from the isolated Welsh mine of Esgair Hir. The Redgillite forms a matt of tiny green micro-crystals mainly covering an area of 1.4cm by 1cm. The Redgillite is associated with micro-crystals of blue Langite, on a partly altered metallic yellow Chalcopyrite matrix, with white Quartz. A rich example of a recent new mineral species. The location was also mentioned in the paper published:- Pluth, J.J., Steele, I.M., Kampf, A.R., Green, D.I. (2005): Redgillite, Cu6(OH)10(SO4)·H2O, a new mineral from Caldbeck Fells, Cumbria, England, UK: Description and crystal structure. Mineralogical Magazine, 69, 973-980.


A bit of history, ore from this mine was used to break the Crown's monopoly on any ore containing over a certain amount of Silver or Gold in 1692. If the ore was found to contain more than the cost of mining and smelting it was taken over by the Crown and became a Mines Royal. 


3.1 × 1.8 × 1.3 cm
Esgair Hir Mine, Nant-y-Moch Reservoir Area, TalyBont, Ceredigion, Wales, Europe

Minerals on Specimen

Minerals on specimen