Rhodonite. From Treburland Manganese Mine, Altarnun, Cornwall. Arthur Russell collection. 

Psilomelane. From an uncertain location in Cornwall. Philip Rashleigh collection. 

Rhodonite. From Treburland Manganese Mine, Altarnun, Cornwall. 

Rhodochrosite. From Geevor Mine, St Just in Penwith, Cornwall. Richard Barstow collection. 

Manganite. From Cornwall. Philip Rashleigh collection. 

Rhodochrosite. From Botallack, St Just in Penwith, Cornwall. Richard Barstow collection. 

Rhodochrosite. From Wheal Owles, St Just in Penwith, Cornwall. 

Rhodonite. From Marystow, Devon. Richard Barstow collection.

Manganite. From Restormel Royal Mine, Lostwithiel, Cornwall. Philip Rashleigh collection. 

Manganite. From Wheal Coates, St Agnes, Cornwall. Philip Rashleigh collection. 

Manganite. From Wood Mine, St Agnes, Cornwall. 

Manganite. From Lifton Mine, Lifton, Devon. 

Wad. From Upton Manganese Mine, Upton Pyne, Devon. Philip Rashleigh collection. 

Wad. From Killiow, Kea, Cornwall. 

Wad. From Upton Manganese Mine, Upton Pyne, Devon. 

Psilomelane. From Trebartha Lemarne, North Hill, Cornwall. Philip Rashleigh collection. 

Psilomelane. From Trebartha Lemarne, North Hill, Cornwall. Philip Rashleigh collection. 

Psilomelane. From Wheal Towan, Porthtowan, Cornwall. 

Psilomelane. From Upton Manganese Mine, Upton Pyne, Devon. 

Psilomelane. From Trebartha Lemarne, North Hill, Cornwall. Philip Rashleigh collection.