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Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Cornwall, England, UKi
| Regional Level Types | |
|---|---|
| Wheal Boys (Trewetha Mine; Old Trewetha Mine) | Mine |
| Port Isaac | Town |
| St Endellion | Civil Parish |
| Cornwall | County |
| England | Constituent Country |
| UK | Country |
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Latitude & Longitude (WGS84):
50° 35' 6'' North , 4° 49' 9'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX004800
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Polzeath | 1,449 (2011) | 7.2km |
| Rock | 1,203 (2017) | 7.2km |
| Delabole | 1,647 (2017) | 7.5km |
| Wadebridge | 6,599 (2017) | 7.6km |
| Trebetherick | 499 (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 | 29km |
An old antimony mine on an ENE-trending lode consisting of quartz and siderite, with stibnite and lead-antimony sulphosalts near the surface and mainly galena at greater depth. The workings consist of a shaft that connects to a cross-cut adit which was driven from the valley southwest of Bodannon farm. The grid reference marks the shaft where a small overgrown dump remains. The sett is said to contain two other lodes, but details of them are not known.
The mine was at work in the late 18th century and produced 95 tons of antimony ore between 1774 and 1776. Hogg (1825) states that it "once produced 100 tons a year containing 8 parts in 20 of pure antimony". It was reopened in 1906, but no further production resulted.
In the early 1820's it is recorded that a collection of silver-lead, antimony and copper ore specimens from Old Trewetha was purchased by the British museum for £1000.
As of 2019, no sign of the shaft is visible and the dumps have been mostly cleared, levelled and given over to grass. Only very minor signs of mine waste now visible. A small building still survives as shown on maps dating to 1880 that may possibly have been associated to the mine workings. Occasional blocks of mineral bearing mine waste can be seen incorporated into the walls of buildings adjacent to the mine site.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 |
| ⓘ Berthierite Formula: FeSb2S4 |
| ⓘ 'Bindheimite' Formula: Pb2Sb2O6O |
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Boulangerite Formula: Pb5Sb4S11 |
| ⓘ Bournonite (TL) Formula: PbCuSbS3 Type Locality: References: |
| ⓘ Cervantite Formula: Sb3+Sb5+O4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Dufrénoysite Formula: Pb2As2S5 |
| ⓘ Galena Formula: PbS |
| ⓘ Heteromorphite ? Formula: Pb7Sb8S19 Description: Embrey (1978): "Two specimens from Port Isaac, Cornwall, were recorded by W. Nevill (1872) in the printed catalogue of his collection (p. 20). Doubtless omitted by Spencer from his lists because of presumed synonymy with semseyite. Confirmation is required." |
| ⓘ Jamesonite Formula: Pb4FeSb6S14 References: |
| ⓘ Mimetite Formula: Pb5(AsO4)3Cl |
| ⓘ 'Plumosite' |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Semseyite Formula: Pb9Sb8S21 |
| ⓘ Siderite Formula: FeCO3 |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ Stephanite Formula: Ag5SbS4 |
| ⓘ Stibiconite Formula: Sb3+Sb5+2O6(OH) |
| ⓘ Stibnite Formula: Sb2S3 References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | 'Plumosite' | 2.. | |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Bournonite (TL) | 2.GA.50 | PbCuSbS3 |
| ⓘ | Stephanite | 2.GB.10 | Ag5SbS4 |
| ⓘ | Berthierite | 2.HA.20 | FeSb2S4 |
| ⓘ | Jamesonite | 2.HB.15 | Pb4FeSb6S14 |
| ⓘ | Dufrénoysite | 2.HC.05d | Pb2As2S5 |
| ⓘ | Heteromorphite ? | 2.HC.10c | Pb7Sb8S19 |
| ⓘ | Semseyite | 2.HC.10d | Pb9Sb8S21 |
| ⓘ | Boulangerite | 2.HC.15 | Pb5Sb4S11 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Cervantite | 4.DE.30 | Sb3+Sb5+O4 |
| ⓘ | 'Bindheimite' | 4.DH.20 | Pb2Sb2O6O |
| ⓘ | Stibiconite | 4.DH.20 | Sb3+Sb5+2O6(OH) |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Mimetite | 8.BN.05 | Pb5(AsO4)3Cl |
List of minerals for each chemical element
Geochronology
| Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||||||||||||||
| Paleozoic | ||||||||||||||||||||||
| Permian | ||||||||||||||||||||||
| Guadalupian |
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| Cisuralian |
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Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
- Rheno-Hercynian BeltOrogenic Belt
UK
- England
- Cornwall
- Wadebridge Mining DistrictMining District
- Devon and Cornwall metalliferous mining districtMining District
- Cornwall
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Wheal Boys, Port Isaac, St Endellion, Cornwall, England, UK