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1 March 1976
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Index Terms/Descriptors
- basalts
- chemical composition
- clay mineralogy
- clay minerals
- Derbyshire England
- England
- Europe
- genesis
- Great Britain
- igneous rocks
- ion exchange
- mineral data
- mineralogy
- minerals
- saponite
- sheet silicates
- silicates
- textures
- United Kingdom
- volcanic rocks
- weathering
- Western Europe
- fibrous
- Calton Hill
- unmixed
Latitude & Longitude
