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Lockridge Mine (Goldstreet Mine), East Tamar Consols, Bere Alston Mines, Bere Ferrers, West Devon, Devon, England, UKi
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Latitude & Longitude (WGS84):
50° 28' 35'' North , 4° 12' 9'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX437664
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bere Alston | 2,164 (2018) | 1.1km |
| Calstock | 790 (2017) | 2.2km |
| Gunnislake | 4,044 (2017) | 5.4km |
| Buckland Monachorum | 779 (2018) | 5.5km |
| Saltash | 15,566 (2017) | 7.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| British Micromount Society, Devon and Cornwall Branch Meetings | Liskeard, Cornwall | 19km |
No output is recorded but most likely a lead silver mine given the location. Dumps contained quartz, sphalerite and fluorite but are now cleared or totally overgrown.
The dumps of Lockridge Mine near Bere Alston in south Devon contain rich specimens of mixed zinc, lead and copper sulphides and sulphosalts overgrowing fluorite. Wurtzite-sphalerite intergrowths showing the ‘ice-fern’ texture, which is characteristic of wurtzite, are intergrown with silver-rich tetrahedrite, tennantite and galena. Close examination suggests that most of the zinc sulphide was deposited as wurtzite and then partially altered to sphalerite. A primary hypogene origin is suggested for all of the minerals described, with the exception of anglesite.
Amalgamated together with Whitsam and Lockridge mines under the name of East Tamar Consols in 1845.
Status: Site of Special Scientific Interest (SSSI)
National Grid Reference: SX 438663
Area: 0.62 (ha) 1.5 (ac)
Ordnance Survey Sheet 1:50,000: 201
1:10,000: SX 46 NW
Description and Reasons for Notification:
This small mine is situated towards the northern end of the large South Tamar lead lode. Although not reworked for fluorite like most local dumps it is nevertheless very rich in that mineral and sphalerite. Excellent specimens of green fluorite, sphalerite and vuggy quartz vein with carbonates can be obtained. Although there are few secondary minerals and practically no galena, the dump shows as a typical example of lead mineralisation outside the Carboniferous Limestone area.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
11 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Anglesite Formula: PbSO4 |
| ⓘ Cerussite Formula: PbCO3 References: |
| ⓘ Fluorite Formula: CaF2 |
| ⓘ Galena Formula: PbS |
| ⓘ Hydrozincite ? Formula: Zn5(CO3)2(OH)6 References: |
| ⓘ Native Sulphur Formula: S8 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Siderite Formula: FeCO3 References: |
| ⓘ Sphalerite Formula: ZnS References: |
| ⓘ 'Tennantite Subgroup' Formula: Cu6(Cu4C2+2)As4S12S |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
| ⓘ 'Tetrahedrite Subgroup var. Silver-bearing Tetrahedrite' Formula: (Cu,Ag)6[Cu4(Fe,Zn)2]Sb4S13 |
| ⓘ Wurtzite ? Formula: (Zn,Fe)S Description: "Ice fern"-like intergrowths with sphalerite, argentiferous tetrahedrite, tennantite and galena. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Wurtzite ? | 2.CB.45 | (Zn,Fe)S |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tennantite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)As4S12S |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| ⓘ | 'var. Silver-bearing Tetrahedrite' | 2.GB.05 | (Cu,Ag)6[Cu4(Fe,Zn)2]Sb4S13 |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| ⓘ | Hydrozincite ? | 5.BA.15 | Zn5(CO3)2(OH)6 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anglesite | 7.AD.35 | PbSO4 |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
- Rheno-Hercynian BeltOrogenic Belt
EuropeContinent
UK
- England
- Callington and Tavistock Mining DistrictMining District
- Devon and Cornwall metalliferous mining districtMining District
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Lockridge Mine, East Tamar Consols, Bere Alston Mines, Bere Ferrers, West Devon, Devon, England, UK