Yamato 692 meteorite, Queen Fabiola Mts, Queen Maud Land, Eastern Antarctica, Antarcticai
| Regional Level Types | |
|---|---|
| Yamato 692 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° 49' 59'' South , 36° 15' 0'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Other/historical names associated with this locality:
Y-692; Yamato 6902; Y-6902
Official name: Yamato 692
Synonym: Y-692, Yamato 6902, Y-6902, Yamato(b), Yamato Ca-poor achondrite
Observed fall: no
Found: Dicember 21, 1969
Coordinates: 71°50'S, 36°15'E
Approx. recovered weight: 138 g
Diogenite
Yamato 692 or 6902, as well as Y-74013 and Y-74037 meteorites, is a diogenite with granoblastic texture and composed almost entirely of equigranualr grains of orthopyroxene. Many other fragments with almost the same appearance were also collected in the same area. However, diogenite is comparatively rare type among meteorites and especially the granoblastic texture is thought to be rather unique in contrast with brecciated structure of usual diogenites. It seems to be very probable that each of these diogenites were once located at the different positions in the identical parent body. The distance from the surface of the preatmospheric mass were studied by means of cosmic-ray particle tracks (Yabuki, 1978). The tracks recorded in bronzite in diogenites are expected to be mostly due to cosmic-ray heavy primaries, because of their extremely low uranium contents. On the basis of the cosmic-ray exposure age of 31 Myr, the distance from the preatmospheric surface to the test crystals is estimated to be 15 cm for Yamato 6902.
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:
| ⓘ Enstatite Formula: Mg2Si2O6 Reference: Yabuki, H. (1978) Charged-particle tracks in Yamato-74 meteorites. Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and mineralogy, 18, 1-2 (February 1978), 85-104. |
| ⓘ Enstatite var. Bronzite Formula: (Mg,Fe2+)2[SiO3]2 Reference: Yabuki, H. (1978) Charged-particle tracks in Yamato-74 meteorites. Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and mineralogy, 18, 1-2 (February 1978), 85-104. |
| ⓘ 'Fayalite-Forsterite Series' Reference: Yabuki, H. (1978) Charged-particle tracks in Yamato-74 meteorites. Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and mineralogy, 18, 1-2 (February 1978), 85-104. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| ⓘ | var. Bronzite | 9.DA.05 | (Mg,Fe2+)2[SiO3]2 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| O | ⓘ Enstatite | Mg2Si2O6 |
| Mg | Magnesium | |
| Mg | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| Mg | ⓘ Enstatite | Mg2Si2O6 |
| Si | Silicon | |
| Si | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| Si | ⓘ Enstatite | Mg2Si2O6 |
| Fe | Iron | |
| Fe | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Yabuki, H. (1978) Charged-particle tracks in Yamato-74 meteorites. Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and mineralogy, 18, 1-2 (February 1978), 85-104.
External Links
Other Regions, Features and Areas containing this locality
Antarctic MeteoritesGroup of Meteorite Fall Locations
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