Setters Quarry, Unst, Shetland Islands, Scotland, UKi
| Regional Level Types | |
|---|---|
| Setters Quarry | Quarry |
| Unst | Island |
| Shetland Islands | Council Area |
| Scotland | Country |
| UK | Country |
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Latitude & Longitude (WGS84):
60° 46' 34'' North , 0° 49' 43'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
HP639110
Type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Symbister | 797 (2012) | 49.4km |
Mindat Locality ID:
232012
Long-form identifier:
mindat:1:2:232012:3
GUID (UUID V4):
d65c6074-a5fa-42d7-8586-e9c095ca3179
Intermittently worked roadstone quarry, in ultrabasic rock.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ✪ Pyroaurite ? Formula: Mg6Fe3+2(OH)16[CO3] · 4H2O Description: Bronze coloured scaly and slickensided coatings on fracture surfaces in serpentinite. XRF analysis confirms the correct composition for pyroaurite. Effervescence in acid confirms carbonate. XRD is ambiguous, giving reasonable matches for both 2H & 3R polytypes, but hampered by their poorly crystalline nature, and consequent poor quality diffraction patterns. Many of the distinguishing reflections for each polytype are missing, and extra ones are present. A mixture of both seems likely, but needs confirmation. (Unpublished work by Dr S. Moreton). References: |
| ✪ 'Pyroaurite-2H' ? Formula: Mg6Fe3+2(OH)16(CO3) · 4H2O Description: Bronze coloured scaly and slickensided coatings on fracture surfaces in serpentinite. XRF analysis confirms the correct composition for pyroaurite/sjögrenite. Effervescence in acid confirms carbonate. XRD is ambiguous, giving reasonable matches for both minerals, but hampered by their poorly crystalline nature, and consequent poor quality diffraction patterns. Many of the distinguishing reflections for each mineral are missing, and extra ones are present. A mixture of both minerals seems likely, but needs confirmation. (Unpublished work by Dr S. Moreton). References: |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 Description: Lenses and small veins of light green material. Also coatings of snow-white, and pale green-grey, material on fracture surfaces. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | 'Pyroaurite-2H' ? | 5.DA.45 | Mg6Fe3+2(OH)16(CO3) · 4H2O |
| ⓘ | Pyroaurite ? | 5.DA.50 | Mg6Fe3+2(OH)16[CO3] · 4H2O |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| H | ⓘ Pyroaurite-2H | Mg6Fe23+(OH)16(CO3) · 4H2O |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| C | Carbon | |
| C | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| C | ⓘ Pyroaurite-2H | Mg6Fe23+(OH)16(CO3) · 4H2O |
| O | Oxygen | |
| O | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| O | ⓘ Pyroaurite-2H | Mg6Fe23+(OH)16(CO3) · 4H2O |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| Mg | ⓘ Pyroaurite-2H | Mg6Fe23+(OH)16(CO3) · 4H2O |
| Si | Silicon | |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Fe | Iron | |
| Fe | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| Fe | ⓘ Pyroaurite-2H | Mg6Fe23+(OH)16(CO3) · 4H2O |
Other Regions, Features and Areas containing this locality
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