Yamato 75097 meteorite, Queen Fabiola Mts, Queen Maud Land, Eastern Antarctica, Antarcticai
Regional Level Types | |
---|---|
Yamato 75097 meteorite | Meteorite Fall Location |
Queen Fabiola Mts | Mountain Range |
Queen Maud Land | Region |
Eastern Antarctica | Region |
Antarctica | Continent |
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Latitude & Longitude (WGS84):
71° 30' South , 35° 40' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Other/historical names associated with this locality:
Y-75097
Ordinary chondrite, shocked and brecciated (L6,br; S5; W1)
Found,1975; 2.5702 kg
Yamato 75097 is one of several meteorites collected during a joint US-Japan expedition. The meteorite is seen to have chondritic textures with indistinct chondrules and chondrule fragments exhibiting extensive integration onto the groundmass. The primary phases are olivine (Fa 24.1) and pyroxene (Fs 20.1) accompanied by minor amounts of plagioclase, merrillite, Fe-Ni metal, and troilite. Relic chondrules include barred, porphyritic, and radial types (BO, PO, POP, RP). Fe-Ni metal and troilite are often pooled at interstices of relic chondrules. Olivine composition is indicative of the L (low iron) geochemical group; silicate equilibration and chondrule integration are indicative of the petrologic type L6 classification. Thin black veinlets, maskelynite, and the fractured, mosaicized olivine are all indicative of strong pre-terrestrial shock (level S5). Weathering is minimal (level W1).
Several unusual clasts have been studied within the Y-75907 meteorite including both Brachina-like and H chondrite-type inclusions. The H-type inclusion has an apparent Ar-40 degassing age of ~490 Ma perhaps indicating a collisional history separate from other components of the meteorite. In addition, similar compositions, cosmic ray exposure ages (~17 Ma) and C-14 ages (~1.5 ka) for Y-75907 and several additional meteorites found nearby all appear to confirm the supposition that they are all members of a single meteorite shower.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 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:
ⓘ Chromite Formula: Fe2+Cr3+2O4 Reference: Yanai, K., Kojima, H., Matsumoto, Y. (1983) A Brachina-like inclusion in the Yamato-75097 L6 chondrite - A preliminary examination: Symposium on Antarctic Meteorites, 8th: National Institute of Polar Research, Memoirs, Special Issue 30: 29-35. (Dec 1983). |
ⓘ 'Fayalite-Forsterite Series' Reference: Yanai, K., Kojima, H., Matsumoto, Y. (1983) A Brachina-like inclusion in the Yamato-75097 L6 chondrite - A preliminary examination: Symposium on Antarctic Meteorites, 8th: National Institute of Polar Research, Memoirs, Special Issue 30: 29-35. (Dec 1983).; Kaneoka, I., Takaoka, N. & and Yanai, K. (1988) 40Ar-39 Ar Analyses of Yamato-75097 (L6) Chondrite from Antarctica: Proc. NIPR Symp.Antarct. Meteorites, 1, 206-214 (1988).; Minami, M., Terui, A. Takaoka, N. & Nakamura, T. (2006) An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites: MAPS 41 (4): 529-540. (Apr 2006).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
ⓘ 'Maskelynite' Reference: Yanai, K., Kojima, H., Matsumoto, Y. (1983) A Brachina-like inclusion in the Yamato-75097 L6 chondrite - A preliminary examination: Symposium on Antarctic Meteorites, 8th: National Institute of Polar Research, Memoirs, Special Issue 30: 29-35. (Dec 1983).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
ⓘ Merrillite Formula: Ca9NaMg(PO4)7 Reference: Yanai, K., Kojima, H., Matsumoto, Y. (1983) A Brachina-like inclusion in the Yamato-75097 L6 chondrite - A preliminary examination: Symposium on Antarctic Meteorites, 8th: National Institute of Polar Research, Memoirs, Special Issue 30: 29-35. (Dec 1983).; Kaneoka, I., Takaoka, N. & and Yanai, K. (1988) 40Ar-39 Ar Analyses of Yamato-75097 (L6) Chondrite from Antarctica: Proc. NIPR Symp.Antarct. Meteorites, 1, 206-214 (1988).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
ⓘ 'Meteoritic Iron' Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Reference: Kaneoka, I., Takaoka, N. & and Yanai, K. (1988) 40Ar-39 Ar Analyses of Yamato-75097 (L6) Chondrite from Antarctica: Proc. NIPR Symp.Antarct. Meteorites, 1, 206-214 (1988). |
ⓘ 'Pyroxene Group' Formula: ADSi2O6 Reference: Minami, M., Terui, A. Takaoka, N. & Nakamura, T. (2006) An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites: MAPS 41 (4): 529-540. (Apr 2006).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
ⓘ Troilite Formula: FeS Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Troilite | 2.CC.10 | FeS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
ⓘ | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Fayalite-Forsterite Series' | - | |
ⓘ | 'Maskelynite' | - | |
ⓘ | 'Meteoritic Iron' | - | |
ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Chromite | Fe2+Cr23+O4 |
O | ⓘ Merrillite | Ca9NaMg(PO4)7 |
O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | ⓘ Pyroxene Group | ADSi2O6 |
Na | Sodium | |
Na | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Mg | Magnesium | |
Mg | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Al | Aluminium | |
Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | ⓘ Pyroxene Group | ADSi2O6 |
P | Phosphorus | |
P | ⓘ Merrillite | Ca9NaMg(PO4)7 |
S | Sulfur | |
S | ⓘ Troilite | FeS |
Ca | Calcium | |
Ca | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Cr | Chromium | |
Cr | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | Iron | |
Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | ⓘ Troilite | FeS |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Yanai, K., Kojima, H., Matsumoto, Y. (1983) A Brachina-like inclusion in the Yamato-75097 L6 chondrite - A preliminary examination: Symposium on Antarctic Meteorites, 8th: National Institute of Polar Research, Memoirs, Special Issue 30: 29-35. (Dec 1983).
Kaneoka, I., Takaoka, N. & and Yanai, K. (1988) 40Ar-39 Ar Analyses of Yamato-75097 (L6) Chondrite from Antarctica: Proc. NIPR Symp.Antarct. Meteorites, 1, 206-214 (1988).
Minami, M., Terui, A. Takaoka, N. & Nakamura, T. (2006) An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites: MAPS 41 (4): 529-540. (Apr 2006).
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp.
External Links
http://www.lpi.usra.edu/meteor/metbull.php - MeteoriticalBulletinDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=25138 -Y-75097@MetBullDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=25138 -Y-75097@MetBullDatabase
Other Regions, Features and Areas containing this locality
Antarctic MeteoritesGroup of Meteorite Fall Locations
Antarctic PlateTectonic Plate
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