| Locality type: | Downs |
| Classification |
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| Species: | Allophane |
| Formula: | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Allophane data |
| Locality Data: | Click here to view Purley Downs, Purley, Croydon, Greater London, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 408 |
| Long-form Identifier: | 1:3:408:8 |
| GUID (UUID V4): | 9e641348-22fd-480c-9dfe-c73a6b485392 |
| Nearest other occurrences of Allophane |
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| 19.0km (11.8 miles) | ⓘCharlton Chalk and Sand Pits (Maryon Park; The Valley), Greenwich, Greater London, England, UK |
| 56.6km (35.2 miles) | ⓘClifton Hill, Brighton and Hove, England, UK |
| 62.6km (38.9 miles) | ⓘNewhaven Cliffs (Fort Hill), Newhaven, Lewes, East Sussex, England, UK |
| 69.0km (42.9 miles) | ⓘCliff Reach (North Bank), Burnham on Crouch, Maldon District, Essex, England, UK |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | http://jgslegacy.lyellcollection.org/ at University College London on June 16, 2016 232 PROCIgBDIN~ OF TH]$ OBOI~GICAI...http://jgslegacy.lyellcollection.org/ at University College London on June 16, 2016 1871.] DRAYSONmGLACIAL ~POCH...northern and southern latitudes would present much greater seasonal changes than at present ; and these changes...than at present in the winter, whilst from the greater elevation attained by the sun in summer that season...http://jgslegacy.lyellcollection.org/ at University College London on June 16, 2016 234 P~oc~n~o8 oF r l ~ OSOLOOIC*T |
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