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Williams Stone Quarry (Trevassack Quarry), Goonhilly Downs, Mawgan-in-Meneage, Cornwall, England, UKi
| Regional Level Types | |
|---|---|
| Williams Stone Quarry (Trevassack Quarry) | Quarry (Flooded) |
| Goonhilly Downs | Downs |
| Mawgan-in-Meneage | Civil Parish |
| Cornwall | County |
| England | Constituent Country |
| UK | Country |
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Latitude & Longitude (WGS84):
50° 3' 15'' North , 5° 11' 48'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW712221
Type:
Quarry (Flooded) - last checked 2019
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mullion | 1,955 (2017) | 4.5km |
| Gweek | 667 (2017) | 4.7km |
| Ruan Minor | 558 (2017) | 6.9km |
| Constantine | 819 (2017) | 7.3km |
| Helston | 12,184 (2017) | 7.6km |
Abandoned quarry in serpentinite.
Located on the northern edge of Goonhilly Downs on the Lizard Peninsula.
As of 2019 the quarry site is being re-used as a sailing lake for training young people.
Access is now restricted.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 References: |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ Cuprite Formula: Cu2O References: |
| ⓘ Hematite Formula: Fe2O3 References: |
| ⓘ Hematite var. Specularite Formula: Fe2O3 References: |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Silver Formula: Ag References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
| ⓘ Stevensite Formula: (Ca,Na)xMg3-x(Si4O10)(OH)2 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | var. Specularite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Stevensite | 9.EC.45 | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| O | ⓘ Hematite var. Specularite | Fe2O3 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Na | Sodium | |
| Na | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Stevensite | (Ca,Na)xMg3-x(Si4O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Hematite var. Specularite | Fe2O3 |
| Cu | Copper | |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Native Copper | Cu |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
Geochronology
| Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||||||||||||||
| Paleozoic | ||||||||||||||||||||||
| Permian | ||||||||||||||||||||||
| Guadalupian |
| |||||||||||||||||||||
| 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
EuropeContinent
UK
- England
- Cornwall
- Lizard ComplexComplex
- Lizard PeninsulaPeninsula
- Cornwall
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
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Williams Stone Quarry, Goonhilly Downs, Mawgan-in-Meneage, Cornwall, England, UK