Lockne Crater (Lockne impact structure), Östersund, Jämtland County, Swedeni
| Regional Level Types | |
|---|---|
| Lockne Crater (Lockne impact structure) | Impact Crater |
| Östersund | Municipality |
| Jämtland County | County |
| Sweden | Country |
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Latitude & Longitude (WGS84):
63° 0' 0'' North , 14° 48' 59'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
273462
Long-form identifier:
mindat:1:2:273462:3
GUID (UUID V4):
45c782ac-d345-4aa1-870a-7dc8d8d4b7cb
Lockne is a 7.5km-wide impact structure that formed circa 455 Ma when an L-chondritic asteroid impacted mixed sedimentary and crystalline target rocks that were under a shallow epicontinental sea (500m deep) at the time. The feature and its surrounding impactite deposits were covered by Caledonian thrust nappes that also partly folded them. Erosion has breached much of the overthrust rocks to show the impact site. Impactites include the Loftarstone (graywacke-like arenite with carbonate grains), Lockne Breccia (polymictic but mostly limestone clasts), Resurge deposits, Ynntjämen Breccia (monomictic, matrix-supported with calcareous-argillaceous matrix) and the Tandsbyn Breccia (monomictic crystalline ejecta).
This crater has been suggested to be a doublet with the nearby smaller Målingen Crater, 16 km (9.9 mi) apart.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Anorthite Formula: Ca(Al2Si2O8) |
| ⓘ Anorthite var. Bytownite Formula: (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ Anorthite var. Labradorite Formula: (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ Lingunite Formula: (Na,Ca)AlSi3O8 |
| ⓘ 'Maskelynite' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | var. Bytownite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ | var. Labradorite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ | Lingunite | 9.FA.70 | (Na,Ca)AlSi3O8 |
| Unclassified | |||
| ⓘ | 'Maskelynite' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | ⓘ Lingunite | (Na,Ca)AlSi3O8 |
| Na | Sodium | |
| Na | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | ⓘ Lingunite | (Na,Ca)AlSi3O8 |
| Mg | Magnesium | |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Al | Aluminium | |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Al | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Al | ⓘ Lingunite | (Na,Ca)AlSi3O8 |
| Si | Silicon | |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | ⓘ Lingunite | (Na,Ca)AlSi3O8 |
| Ca | Calcium | |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Ca | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Ca | ⓘ Lingunite | (Na,Ca)AlSi3O8 |
| Fe | Iron | |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Other Regions, Features and Areas containing this locality
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References
Lockne Crater, Östersund, Jämtland County, Sweden