Steingarden Nunataks 07011 meteorite, Steingarden Nunataks site, Queen Maud Land, Eastern Antarctica, Antarcticai
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Latitude & Longitude (WGS84):
72° 20' 38'' South , 16° 9' 33'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Deposit first discovered:
2007
Köppen climate type:
Other/historical names associated with this locality:
STG 07011
Official name: Steingarden Nunataks 07011
Abbreviation: STG 07011
Observed fall: no
Found: 2007
Coordinates (Meteoritical Bulletin 102): 72°20.64' S, 16°9.565' E
Recovered weight: 15.43 g
LL4/5 chondrite, shock stage S3, weathering grade W2
The find site is placed on the southern face of an ice rise with numerous rock fragments on its surface (Delisle et al., 2015).
The meteorite is a stone partly covered by a dull black fusion crust. Cut surfaces exhibit a light grey interior with very few finely dispersed metal grains. Numerous small (~ 1 mm in diametre) chondrules are visible on both the broken and cut surfaces. Well-defined chondrules (up to ~ 2 mm) are visible in thin section. In places, some chondrule outlines are discernable but not clearly distinct from in the embedding recrystallised matrix. Twinned clinopyroxene is rare. The apparent diameter of plagioclase crystals is < 20 μm. Shock metamorphic features comprising undulatory extinction of olivine and pyroxene, and the presence of planar fractures in olivine indicate that the meteorite is weakly shocked. Weathering effects comprise intense limonitic staining and significant oxidation of metal (about 50 % affected).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
1 valid mineral.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Forsterite Formula: Mg2SiO4 Description: Average composition of olivine Fa29.5 Reference: Ruzicka, A., Grossman, J., Bouvier, A., Herd, C.D.K., and Agee, C.B. (2013) The Meteoritical Bulletin, No. 102, https://www.lpi.usra.edu/meteor/metbull.php?code=57677; Delisle, G., Brandstätter, F., and Koeberl, C. (2015) Meteorite concentration sites in Queen Maud Land, Antarctica - a first assessment. Annalen des Naturhistorischen Museums in Wien, Serie A, 117, 5-34.
|
| ⓘ 'Low-calcium pyroxene' Description: Average composition Wo1.0±0.2Fs23.8±0.5 Reference: Ruzicka, A., Grossman, J., Bouvier, A., Herd, C.D.K., and Agee, C.B. (2013) The Meteoritical Bulletin, No. 102, https://www.lpi.usra.edu/meteor/metbull.php?code=57677; Delisle, G., Brandstätter, F., and Koeberl, C. (2015) Meteorite concentration sites in Queen Maud Land, Antarctica - a first assessment. Annalen des Naturhistorischen Museums in Wien, Serie A, 117, 5-34.
|
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Reference: Delisle, G., Brandstätter, F., and Koeberl, C. (2015) Meteorite concentration sites in Queen Maud Land, Antarctica - a first assessment. Annalen des Naturhistorischen Museums in Wien, Serie A, 117, 5-34.
|
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Low-calcium pyroxene' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Ruzicka, A., Grossman, J., Bouvier, A., Herd, C.D.K., and Agee, C.B. (2013) The Meteoritical Bulletin, No. 102; https://www.lpi.usra.edu/meteor/metbull.php?code=57677
Delisle, G., Brandstätter, F., and Koeberl, C. (2015) Meteorite concentration sites in Queen Maud Land, Antarctica - a first assessment. Annalen des Naturhistorischen Museums in Wien, Serie A, 117, 5-34.
Other Regions, Features and Areas containing this locality
Antarctic MeteoritesGroup of Meteorite Fall Locations
Antarctic PlateTectonic Plate
Antarctica
- Western Antarctica
- Transantarctic MountainsMountain Range
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