| Locality type: | Mine |
| Classification |
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| Species: | Muscovite var: Illite |
| Formula: | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Age information |
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| Maximum recorded age: | 395 Ma |
| Minimum recorded age: | 362 Ma |
| Sample ages: | |
| Sample references: | |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Illite data |
| Locality Data: | Click here to view Castle Nook Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 16535 |
| Long-form Identifier: | 1:3:16535:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Illite |
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| 1.5km (0.9 miles) | ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK |
| 2.7km (1.7 miles) | ⓘYewthwaite Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK |
| 4.6km (2.9 miles) | ⓘWad Mine, Seathwaite, Borrowdale, Allerdale, Cumbria, England, UK |
| 5.3km (3.3 miles) | ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK |
| 8.8km (5.5 miles) | ⓘThornthwaite Mine, Thornthwaite, Above Derwent, Allerdale, Cumbria, England, UK |
| 12.2km (7.6 miles) | ⓘBrundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK |
| 13.3km (8.3 miles) | ⓘThrelkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK |
| 13.7km (8.5 miles) | ⓘGreenside Mine, Patterdale, Eden, Cumbria, England, UK |
| 18.6km (11.6 miles) | ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK |
| 18.9km (11.8 miles) | ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK |
| References |
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