Loch Roag, Lewis, Isle of Lewis and Harris, Outer Hebrides, Scotland, UKi
Regional Level Types | |
---|---|
Loch Roag | Loch |
Lewis | Region |
Isle of Lewis and Harris | Island |
Outer Hebrides | Council Area |
Scotland | Country |
UK | Country |
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Latitude & Longitude (WGS84):
58° 12' 20'' North , 6° 50' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
213704
Long-form identifier:
mindat:1:2:213704:2
GUID (UUID V4):
d423e953-89e8-41f5-9e01-475cad9eebee
Several gem-quality sapphire crystals were found during excavation for a farm path in the 1980s, in a xenolithic camptonite dyke. Crystals averaged 2-3cm in length and all were of gem quality.
The site is now a SSSI (Site of Special Scientific Interest) and collecting is strictly prohibited.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
✪ Corundum Formula: Al2O3 Habit: Hexagonal barrel-shaped crystals Colour: Deep royal blue |
✪ Corundum var. Sapphire Formula: Al2O3 Habit: Hexagonal barrel-shaped crystals Colour: Deep royal blue |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
ⓘ Phlogopite Formula: KMg3(AlSi3O10)(OH)2 |
ⓘ Sanidine Formula: K(AlSi3O8) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Corundum | 4.CB.05 | Al2O3 |
ⓘ | var. Sapphire | 4.CB.05 | Al2O3 |
Group 9 - Silicates | |||
ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
ⓘ | Sanidine | 9.FA.30 | K(AlSi3O8) |
Unclassified | |||
ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
O | Oxygen | |
O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
O | ⓘ Corundum | Al2O3 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
O | ⓘ Sanidine | K(AlSi3O8) |
O | ⓘ Corundum var. Sapphire | Al2O3 |
F | Fluorine | |
F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Mg | Magnesium | |
Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Al | Aluminium | |
Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | ⓘ Corundum | Al2O3 |
Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Al | ⓘ Sanidine | K(AlSi3O8) |
Al | ⓘ Corundum var. Sapphire | Al2O3 |
Si | Silicon | |
Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Si | ⓘ Sanidine | K(AlSi3O8) |
K | Potassium | |
K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
K | ⓘ Sanidine | K(AlSi3O8) |
Ti | Titanium | |
Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | Iron | |
Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
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