Beudantite from
Higher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
| Classification | ||
|---|---|---|
| Species: | Beudantite | |
| Formula: | PbFe3(AsO4)(SO4)(OH)6 | |
| Comments: | Green et al. (2008): "Beudantite was identified by XRD and WDS as yellow to brown euhedral rhombic crystals up to about 0.2 mm on edge, which are sometimes aggregated into spherical masses. It also forms crusts on iron-stained quartz. Beudantite occurs with baryte and lepidocrocite in cellular quartz veinstone found in screes at the northeast end of the exposure of the vein in higher Roughton Gill. Screes on the east side of the valley produced well-formed yellow to dark brown rhombic to pseudo-cubic crystals in an iron-stained matrix. The exact source of these latter specimens, which are sometimes associated with well-crystallised carminite, is unknown. Beudantite was noted with carminite at Balliway Rigg in an unpublished manuscript prepared by Arthur Kingsbury in 1951. It was later described with a variety of other minerals including, jarosite, plumbojarosite, and beaverite by Kingsbury and Hartley (1960). The claimed Roughton Gill alunite jarosite group specimens in the Kingsbury collection are not particularly spectacular but they do not give the impression of a coherent group, which were all collected from the same locality. Many of the other specimens on which the 1960 'carminite and beudantite' paper is based, including for example beudantite with olivenite from Dry Gill Mine, and beudantite from Ingray Gill, are almost certainly fraudulent. Kingsbury's beudantite specimens cannot be considered trustworthy." | |
| Habit: | spherical aggregates of rhombic crystals; crusts; rhombic to pseudocubic | |
| Colour: | yellow, yellowish-brown, greenish-brown, brown | |
| Confirmation | ||
| Validity: | Confirmed | |
| Confirmation Methods: | XRD SEM-WDS | |
| Data | ||
| Mineral Data: | Click here to view Beudantite data | |
| Locality Data: | Click here to view Higher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 562955 | |
| Long-form Identifier: | 1:3:562955:8 | |
| GUID (UUID V4): | 8020da66-4a9d-46b2-9377-0db497a5fa80 | |
| Nearest other occurrences of Beudantite | ||
| 0.0km (0.0 miles) | ⓘThief Gills, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK | |
| 0.4km (0.2 miles) | ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK | |
| 0.6km (0.4 miles) | ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK | |
| 1.5km (0.9 miles) | ⓘBurdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK | |
| 1.6km (1.0 miles) | ⓘArm O'Grain, Coombe Height, Mungrisdale, Eden, Cumbria, England, UK | |
| 2.1km (1.3 miles) | ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK | |
| 2.3km (1.4 miles) | ⓘDry Gill Mine, Caldbeck, Allerdale, Cumbria, England, UK | |
| 2.3km (1.4 miles) | ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK | |
| 2.5km (1.5 miles) | ⓘGrains Gill, Mungrisdale, Eden, Cumbria, England, UK | |
| 2.7km (1.7 miles) | ⓘDeer Hills, Caldbeck, Allerdale, Cumbria, England, UK | |
| References | ||
