Cacoxenite from
Downrew Quarry, Bishop's Tawton, North Devon, Devon, England, UK
| Locality type: | Quarry | ||||||
| Classification | |||||||
|---|---|---|---|---|---|---|---|
| Species: | Cacoxenite | ||||||
| Formula: | Fe243+AlO6(PO4)17(OH)12 · 75H2O | ||||||
| Formation: | Secondary | ||||||
| Comments: | Cacoxenite is found as a bright yellow encrustation in fractures in the rock of the quarry, often in association with porous quartz veins. Where it is found, it is locally abundant but is absent through most of the quarry. Larger plates showing the phosphatic mineralisation vary across the suface between clove-brown and bright yellow, occasionally to orange and red. The cacoxenite is generally between a deep yellow-brown and bright yellow. | ||||||
| Habit: | massive, botryoidal, encrusting | ||||||
| Colour: | yellow | ||||||
| Quality for species: | Poor for species, only of interest for locality collectors. (#) | ||||||
| Abundance at site: | Common | ||||||
| Confirmation | |||||||
| Validity: | Confirmed | ||||||
| Confirmation Methods: | Visually Identified | ||||||
| Analysis Reference: | F2017-12-CH(DQ) | ||||||
| Associated Minerals Based on Photo Data: | |||||||
| Common Opal | ⓘ1 photo of Cacoxenite associated with Common Opal at this locality. | ||||||
| Data | |||||||
| Mineral Data: | Click here to view Cacoxenite data | ||||||
| Locality Data: | Click here to view Downrew Quarry, Bishop's Tawton, North Devon, Devon, England, UK | ||||||
| Data Identifiers | |||||||
| Mindat Occurrence Record ID: | 1215085 | ||||||
| Long-form Identifier: | 1:3:1215085:8 | ||||||
| GUID (UUID V4): | fce92276-da33-4059-8780-691a7f1688da | ||||||
| Nearest other occurrences of Cacoxenite | |||||||
| 53.5km (33.3 miles) | ⓘGreystone Quarry, Lezant, Cornwall, England, UK | ||||||
| 57.5km (35.7 miles) | ⓘPwll Du Head, Pennard, Swansea, Wales, UK | ||||||
| 65.4km (40.6 miles) | ⓘPhoenix United Mine, Minions, Linkinhorne, Cornwall, England, UK | ||||||
| 65.5km (40.7 miles) | ⓘWheal Phoenix, Phoenix United Mine, Minions, Linkinhorne, Cornwall, England, UK | ||||||
| 92.4km (57.4 miles) | ⓘCastle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, Cornwall, England, UK | ||||||
| 92.5km (57.5 miles) | ⓘGunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK | ||||||
| References | |||||||
| Reference Search (possible matching items) | |||||||
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Downrew Quarry, Bishop's Tawton, North Devon, Devon, England, UK