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Chalcedony from
Ashford Black Marble mines, Ashford-in-the-Water, Derbyshire, England, UK

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Ford, T., A. Sarjeant & M. Smith (1993): The minerals of the Peak district of Derbyshire. UK Jour. Mines & Minerals 13, 16-55.
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Ashford Black Marble mines, Ashford-in-the-Water, Derbyshire, England, UK
Nearest other occurrences of Chalcedony
1.1km (0.7 miles) Dirtlow Rake, Ashford-in-the-Water, Derbyshire, England, UK
2.0km (1.2 miles) Holme Bank Mine (Castle Hill Mine), Bakewell, Derbyshire, England, UK
8.8km (5.5 miles) Hucklow Edge, Great Hucklow, Derbyshire, England, UK
14.3km (8.9 miles) Masson Hill and mines, Matlock, Derbyshire, England, UK
14.8km (9.2 miles) Dale Mine, Warslow, Warslow and Elkstones, Staffordshire, England, UK
14.8km (9.2 miles) High Tor, Matlock, Derbyshire, England, UK
110.4km (68.6 miles) Roman Gravels Mine, Hope-Shelve District, Shropshire, England, UK
111.2km (69.1 miles) Rock Mine, Callow Hill-Bog District, Shropshire, England, UK
112.3km (69.8 miles) Radley Mine, Black Radley Hill, Callow Hill-Bog District, Shropshire, England, UK
112.6km (70.0 miles) Grit Mines (East Grit; White Grit; Old Grit; Foxholes), Hope-Shelve District, Shropshire, England, UK
132.0km (82.0 miles) Winterings Edge, Gunnerside Gill, Swaledale, North Pennines, North Yorkshire, England, UK
132.3km (82.2 miles) Calver Hill, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK
165.9km (103.1 miles) Eycott Hill, Keswick, Keswick District, Cumbria, England, UK
166.0km (103.1 miles) Falcon Crag, Keswick District, Cumbria, England, UK
178.4km (110.9 miles) Sikehead Mine, Hunstanworth, Derwent Valley, North Pennines, Co. Durham, England, UK
179.0km (111.2 miles) Whiteheaps Mine, Hunstanworth, Derwent Valley, North Pennines, Co. Durham, England, UK
180.4km (112.1 miles) Haile Moor Mine, Egremont, West Cumberland Iron Field, Cumbria, England, UK
181.4km (112.7 miles) Force Crag Mine (Force Craig Mine), Coledale, Braithwaite District, Cumbria, England, UK
182.6km (113.5 miles) Reeding Mine, Blanchland, Derwent Valley, North Pennines, Northumberland, England, UK
182.7km (113.5 miles) Shildon Mines, Blanchland, Derwent Valley, North Pennines, Northumberland, England, UK
186.8km (116.1 miles) Driggith Mine (Driggeth Mine), Caldbeck Fells, Cumbria, England, UK
187.3km (116.4 miles) Roughton Gill Mine, Roughton Gill, Caldbeck Fells, Cumbria, England, UK
190.2km (118.2 miles) Sandwith Mine, Whitehaven, Cumbria, England, UK
195.2km (121.3 miles) Cattybrook Quarry, Almondsbury, South Gloucestershire, England, UK
201.6km (125.3 miles) Risca Quarry, Risca, Caerphilly, Wales, UK
Mineral and/or Locality  
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