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Steingarden Nunataks 07013 meteorite, Steingarden Nunataks site, Queen Maud Land, Eastern Antarctica, Antarcticai
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Latitude & Longitude (WGS84):
72° 20' 53'' South , 15° 57' 56'' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Deposit first discovered:
2007
Köppen climate type:
Other/historical names associated with this locality:
STG 07013
Official name: Steingarden Nunataks 07013
Abbreviation: STG 07013
Observed fall: no
Found: 2007
Coordinates (Meteoritical Bulletin 102): 72°20.883' S, 15°57.954' E
Recovered weight: 188.6 g
H5 chondrite, shock stage S1, weathering grade W1
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 stony meteorite consists of two fragments found about 50 m apart. The individual pieces are covered by a dull black fusion crust and have dark brown weathered natural broken surfaces that match perfectly. The dark grey interior is metal-rich and exhibits numerous well-defined chondrules. Not well-delineated but clearly discernible chondrules (up to ~ 1.3 mm) set into a recrystallised matrix have been observed under a microscope. Twinned clinopyroxene is absent. The apparent diametre of plagioclase crystals is < 50 μm. Sharp optical extinction of olivine indicates that the meteorite is unshocked. 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 Fa18.3 References: |
| ⓘ 'Low-calcium pyroxene' Description: Average composition Wo1.7±0.1Fs16.7±0.3 References: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| Unclassified | |||
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Low-calcium pyroxene' | - | |
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 |
Other Regions, Features and Areas containing this locality
Antarctic MeteoritesGroup of Meteorite Fall Locations
Antarctic PlateTectonic Plate
- Tonian Oceanic Arc TerraneVolcanic Arc
Antarctica
- Transantarctic MountainsMountain Range
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