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Mereheadite from
Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
| Locality type: | Quarry | |
| Classification | ||
|---|---|---|
| Species: | Mereheadite | |
| Formula: | Pb47Cl25(OH)13O24(CO3)(BO3)2 | |
| Comments: | Originally from manganese-rich pods along 'Vein 2' and from loose blocks believed to have been derived from 'Vein 1'. Recently found in manganese pods on benches F and G in 2005 and 2006 respectively. | |
| Habit: | massive; occasionally crude xls but these are very, very rare | |
| Colour: | yellow orange to reddish brown | |
| Luminescent properties: | occasionally yellow-green (SW) but this may be due to impurities | |
| Quality for species: | Excellent - world class for species or very significant. (!!) | |
| Abundance at site: | Very Rare | |
| Confirmation | ||
| Validity: | Valid - Type Locality | |
| Associated Minerals Based on Photo Data: | ||
| Mendipite | 20 | |
| Rickturnerite | 9 | |
| Chloroxiphite | 9 | |
| Crednerite | 7 | |
| Parkinsonite | 6 | |
| Paralaurionite | 4 | |
| Plumbonacrite | 3 | |
| Diaboleite | 3 | |
| Hydrocerussite | 2 | |
| Symesite | 2 | |
| Calcite | 1 | |
| Cerussite | 1 | |
| Data | ||
| Mineral Data: | Click here to view Mereheadite data | |
| Locality Data: | Click here to view Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK | |
| Photo Gallery | View Gallery (11 photos) | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 7564 | |
| Long-form Identifier: | 1:3:7564:0 | |
| GUID (UUID V4): | 0 | |
| Nearest other occurrences of Mereheadite | ||
| 35.8km (22.2 miles) | ⓘWesley Mine, Westbury on Trym, Bristol, England, UK | |
| References | ||
Welch, M. D., Criddle, A. J., Symes, R. F. (1998) Mereheadite, Pb2O(OH)Cl: a new litharge-related oxychloride from Merehead Quarry, Cranmore, Somerset. Mineralogical Magazine, 62 (3) 387-393 doi:10.1180/002646198547657 Turner, R. (2006) A mechanism for the formation of the mineralized Mn deposits at Merehead Quarry, Cranmore, Somerset, England. Mineralogical Magazine, 70 (6) 629-653 doi:10.1180/0026461067060359 | ||
Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK