Steingarden Nunataks 07007 meteorite, Steingarden Nunataks site, Queen Maud Land, Eastern Antarctica, Antarcticai
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Latitude & Longitude (WGS84):
72° 20' 52'' South , 16° 8' 56'' 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 07007
Official name: Steingarden Nunataks 07007
Abbreviation: STG 07007
Observed fall: no
Found: 2007
Coordinates (Meteoritical Bulletin 103): 72°20.866' S, 16°8.94' E
Recovered weight: 112.27 g
H5/6 chondrite, shock stage S1, weathering grade W1-W2
The find site is placed on the southern face of an ice rise at the southern limit of an extended N-S oriented veneer of rock fragments including some m-sized boulders resting on the ice surface (Delisle et al., 2015).
The meteorite is a brown stone partly covered by black fusion crust. The cut surface exhibits a fine-grained grey interior consisting of an in places metal-rich and porous matrix. A few chondrule outlines are clearly visible. Not well-delineated but clearly discernible chondrules (up to ~ 2 mm) have been observed in thin section. In places, chondrule outlines are indistinct in the recrystallized matrix. Twinned clinopyroxene is absent. Sharp optical extinction of olivine indicates that the meteorite is unshocked. In reflected light pores (up to 0.2 mm) partly filled by weathering oxides are visible. However, most of the metal grains are unaffected by oxidation.
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 Fa18.3 Reference: Ruzicka, A., Grossman, J., Bouvier, A., and Agee, C.B. (2014) The Meteoritical Bulletin, No. 103, https://www.lpi.usra.edu/meteor/metbull.php?code=59496; 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±0.2Fs16.6±0.1 Reference: Ruzicka, A., Grossman, J., Bouvier, A., and Agee, C.B. (2014) The Meteoritical Bulletin, No. 103, https://www.lpi.usra.edu/meteor/metbull.php?code=59496; 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' | - | |
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., and Agee, C.B. (2014) The Meteoritical Bulletin, No. 103; https://www.lpi.usra.edu/meteor/metbull.php?code=59496
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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