Mount Wisting 95300 meteorite, Mount Wisting, Queen Maud Land, Eastern Antarctica, Antarcticai
| Regional Level Types | |
|---|---|
| Mount Wisting 95300 meteorite | Meteorite Fall Location |
| Mount Wisting | Mountain |
| Queen Maud Land | Region |
| Eastern Antarctica | Region |
| Antarctica | Continent |
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Latitude & Longitude (WGS84):
86° 27' 0'' South , 165° 25' 59'' West
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Other/historical names associated with this locality:
WSG 95300
Ordinary chondrite, unequilibrated (H3.3; S2; W1)
Found,1995; 2.733 kg
The Mount Wisting 95300 (WSG 95300) chondritic stone [14 x 10 x 9 cm] was largely covered by a brown/black fusion crust with lighter splotches and completely smooth surface when found in Antarctica. Thereafter, it was soon recognized as a moderately unequilibrated (primitive) chondrite. In thin sections its most obvious constituents are the distinct, frequently white and cream-colored olivine- and pyroxene-rich chondrules (dimensions ≤ 1.8 µm). Chondrule types are quite varied (barred, radial, porphyritic…) and the chondrules are often rimmed by small amounts of feldspathic mesostasis. Unequilibrated olivine (Fa1-21) and Ca-poor pyroxene (Fs2-17) are the predominant constituents of both the chondrules and the darker matrix. Minor amounts of Fe-Ni metal and troilite are also readily observed in reflected light within the matrix, especially near rims of larger chondrules. Olivine and pyroxene compositions are characteristic of the H (high iron) ordinary chondrite group. The distinct chondrules, moderate disequilibration, and presence of primary glass are indicative of petrologic type H3.4. Undulose extinction of olivine is indicative of very moderate shock (level S2). Weathering grade (W1) is indicated by mild rustiness, mostly around metal and sulfide grains, and by the lack of prominent oxide veining.
Recent studies of WSG 95300 have searched for relicts of the early solar nebula and even pre-solar components. One interesting study of primitive chondrites revealed some unusual pre-solar spinel. Unfortunately the two grains were derived from a mix of WSG 95300 and 2 other meteorites so that the actual meteoritic host remains unknown!
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
2 valid minerals.
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:
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine composition (Fa1-21). Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997).; Grossman, J.N. (1998). The Meteoritical Bulletin, No. 82, 1998 July. Meteoritics & Planetary Science 33 (4,Suppl.): A221-A239. (July 1998).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. |
| ⓘ Forsterite Formula: Mg2SiO4 Description: Forsterite — Olivine grains in Fa1-9 mol% range constitute Forsterite, sensu strictu. Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997).; Grossman, J.N. (1998). The Meteoritical Bulletin, No. 82, 1998 July. Meteoritics & Planetary Science 33 (4,Suppl.): A221-A239. (July 1998).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. |
| ⓘ 'Glass' Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997). |
| ⓘ 'Limonite' Description: Weathering grade A/B indicative of readily noted rustiness from hydrated iron oxides. Reference: Grossman, J.N. (1998). The Meteoritical Bulletin, No. 82, 1998 July. Meteoritics & Planetary Science 33 (4,Suppl.): A221-A239. (July 1998). |
| ⓘ 'Meteoritic Iron' Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997). |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 Description: Pyroxene composition (Fs2-17) indicates that 'pyroxene' includes either (mineralogically undescribed) clinoenstatite or clinoenstatite sensu strictu (Fs 2-9) as well as the normal 'orthobronzite' or 'clinobronzite' which, along with olivine, chemically dominate H chondrites. Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. |
| ⓘ Troilite Formula: FeS Reference: Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 9 - Silicates | |||
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Glass' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Meteoritic Iron' | - | |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| Mg | Magnesium | |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Si | Silicon | |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| Fe | Iron | |
| Fe | ⓘ Troilite | FeS |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Satterwhite, C. & Lindstrom, M.-eds. (1997) Antarctic Meteorite Newsletter 20(1). Johnson Space Center: Houston. (Feb 1997).
Grossman, J.N. (1998). The Meteoritical Bulletin, No. 82, 1998 July. Meteoritics & Planetary Science 33 (4,Suppl.): A221-A239. (July 1998).
Lofgren, G.E., Le, L. & Schatz, V. (1999) Partial Melting of WSG95300: A Type 3 UOC (abstract): Lunar and Planetary Science Conference XXX, abs#1742. (Mar 1999).
Zega, T.J., Nittler, L.R., Gyngard, F., Alexander, C.M. O.'D., Stroud, R.M. & Zinner, E.K. (2014) A transmission electron microscopy study of presolar spinel: G&CA. (Jan 2014).
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
External Links
http://www.lpi.usra.edu/meteor/metbull.php - MeteoriticalBulletinDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=16810 -MountWisting95300@MetBullDatabase
http://curator.jsc.nasa.gov/antmet/amn/amn.cfm#n201 -AMN 20(1)
http://adsabs.harvard.edu/abs/1999LPI....30.1742L -Lofgren & 2 (1999)
http://www.lpi.usra.edu/meteor/metbull.php?code=16810 -MountWisting95300@MetBullDatabase
http://curator.jsc.nasa.gov/antmet/amn/amn.cfm#n201 -AMN 20(1)
http://adsabs.harvard.edu/abs/1999LPI....30.1742L -Lofgren & 2 (1999)
Other Regions, Features and Areas containing this locality
Antarctic PlateTectonic Plate
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