Steingarden Nunataks 07001 meteorite, Steingarden Nunataks site, Queen Maud Land, Eastern Antarctica, Antarcticai
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Latitude & Longitude (WGS84):
72° 21' 59'' South , 15° 59' 24'' 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 07001
Official name: Steingarden Nunataks 07001
Abbreviation: STG 07001
Observed fall: no
Found: 2007
Coordinates (Meteoritical Bulletin 102): 72°21.98' S, 15°59.394' E
Recovered weight: 454.8 g
L6 chondrite, shock stage S6, weathering grade W1
The find site is unusual as it is located on an ice ramp sloping gently to heavily crevassed terrain. It is, therefore, likely that the meteorite in question (STG 07001) had rested only for a short time on the surface of this ice field (Delisle et al., 2015).
The meteorite is a brown stone partly covered by black fusion crust. Cut surfaces exhibit thin (< 2 mm) shock veins and in places moderate cracks. A few chondrule outlines and finely dispersed metal grains are visible. The interior is grey with rusty areas around metal particles. The meteorite observed under a microscope exhibits a strongly recrystallized texture and appears strongly shocked. Irregular distributed thin shock veins cross-cut the whole section. Well-defined chondrules are absent and only a few relic chondrules are present. The apparent diameter of "plagioclase" which is completely transformed into maskelynite exceeds in places 100 μm. In areas adjacent to melt veins some olivine grains show recrystallization textures. Weathering effects are limonitic staining, minor oxide rims around metal and minor oxide veins.
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 Fa 25.2 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=57669; 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 Wo1.5±0.2Fs21.6±0.3 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=57669; 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. |
| ⓘ 'Maskelynite' 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' | - | |
| ⓘ | 'Maskelynite' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Forsterite | Mg2SiO4 |
| Mg | Magnesium | |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Si | Silicon | |
| Si | ⓘ Forsterite | Mg2SiO4 |
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=57669
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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