Yamato 81020 meteorite, Queen Fabiola Mts, Queen Maud Land, Eastern Antarctica, Antarcticai
| Regional Level Types | |
|---|---|
| Yamato 81020 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-81020
Carbonaceous Chondrite (CO3.0; S1)
Find, 1981; 270 g
Yamato 81020 (Y-81020) is a very small stone rich in small chondrules and inclusions embedded in a very fine-grained matrix. While it was soon recognized as a somewhat primitive CO (Ornans-like) carbonaceous chondrite [See Graham, et al., 1985], early interest in the meteorite was focused on the small spinel-rich refractory inclusions within the meteorite and very little of the readily available literature references the small olivine and pyroxene chondrules or tiny silicate grains within the matrix which actually constitute most of the meteorite. That is beginning to change because it now clear that Y-81020 is one of the very few type 3.0 CO meteorites and is not only rich in relatively unaltered spinels and other high temperature condensates from the early solar nebula, but its chondrules, amoeboidal olivine-rich aggregates, and matrix silicates are an isotopically diverse mixture from a very ancient physical regime within the early solar nebula — a regime that is sparsely represented even within the carbonaceous chondrites themselves.
As of July 2014 all 498 known CO chondrites were classified as type CO3 chondrites, but only 64 CO chondrites have been classified as belonging to one of the subtypes between CO3.0 and CO3.8. Yamato 81020 is one of the 7 known CO3.0 meteorites. Four of the CO3.0s are Northwest Africa meteorites and represent an unknown number of separate falls (1-4?) as the main masses of 3 of them are held by the same individual. As (probably) one of only 4 or 5 CO3.0 meteorites, Y-81020 is a rare meteorite indeed.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
16 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:
| ⓘ Anorthite Formula: Ca(Al2Si2O8) Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Augite var. Fassaite Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Cohenite Formula: Fe3C Reference: Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Corundum Formula: Al2O3 Description: Corundum or an alumina polymorph. Reference: Yurimoto, H., Rubin, A. E., Itoh, S. & Wasson, J. T. (2001) Non-Stoichiometric Al-rich Spinel in an Ultra-Refractory Inclusion from CO Chondrite (abstract): Lunar and Planetary Science Conference XXXII, abstract #1557. (Mar 2001). |
| ⓘ Diopside Formula: CaMgSi2O6 Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.; Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003). |
| ⓘ Enstatite Formula: Mg2Si2O6 Reference: Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003). |
| ⓘ Fayalite Formula: Fe2+2SiO4 Reference: Krot, A. N., Doyle, P. & Nagashima, K. (2013) Secondary Fayalite, Hedenbergite, and Magnetite in the CO3.0-3.1 Carbonaceous Chondrites Y-81020, EET 90043, and MAC 88107: Lunar and Planetary Science Conference XLIV. LPI Contribution #1719: p.1754. (Mar 2013). |
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine (Fa10.5) Reference: Graham, A. L., Yanai, K., Kojima, H. & Ikadai, S. (1985) Yamato 81020 and Yamato 82042; Two New Carbonaceous Chondrites from Antarctica: Meteoritics 20 (4): 654-655. (Dec 1985).; Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003). |
| ⓘ Forsterite Formula: Mg2SiO4 Description: In Amoeboidal olivine aggregate (AOA). Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003).; Komatsu, M., Krot, A. N., Miyamoto, M. & Keil, K. (2005) EBSD Study of Amoeboid Olivine Aggregates with Low-Ca Pyroxenes in the Y-81020 CO3.0 Chondrite (abstract): Annual Lunar and Planetary Science Conference XXXVI, abstract #1573. (March 2005). |
| ⓘ Gehlenite Formula: Ca2Al[AlSiO7] Reference: Yurimoto, H., Rubin, A. E., Itoh, S. & Wasson, J. T. (2001) Non-Stoichiometric Al-rich Spinel in an Ultra-Refractory Inclusion from CO Chondrite (abstract): Lunar and Planetary Science Conference XXXII, abstract #1557. (Mar 2001). |
| ⓘ Grossite Formula: CaAl4O7 Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Hedenbergite Formula: CaFe2+Si2O6 Reference: Krot, A. N., Doyle, P. & Nagashima, K. (2013) Secondary Fayalite, Hedenbergite, and Magnetite in the CO3.0-3.1 Carbonaceous Chondrites Y-81020, EET 90043, and MAC 88107: Lunar and Planetary Science Conference XLIV. LPI Contribution #1719: p.1754. (Mar 2013). |
| ⓘ Hibonite Formula: CaAl12O19 Description: A few rare hibonite-bearing inclusions. Reference: Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.; Krot, A. N., Doyle, P. & Nagashima, K. (2013) Secondary Fayalite, Hedenbergite, and Magnetite in the CO3.0-3.1 Carbonaceous Chondrites Y-81020, EET 90043, and MAC 88107: Lunar and Planetary Science Conference XLIV. LPI Contribution #1719: p.1754. (Mar 2013). |
| ⓘ 'Melilite Group' Formula: Ca2M(XSiO7) Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). |
| ⓘ 'Meteoritic Iron' Reference: Komatsu, M., Krot, A. N., Miyamoto, M. & Keil, K. (2005) EBSD Study of Amoeboid Olivine Aggregates with Low-Ca Pyroxenes in the Y-81020 CO3.0 Chondrite (abstract): Annual Lunar and Planetary Science Conference XXXVI, abstract #1573. (March 2005). |
| ⓘ Perovskite Formula: CaTiO3 Reference: Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.; Yurimoto, H., Rubin, A. E., Itoh, S. & Wasson, J. T. (2001) Non-Stoichiometric Al-rich Spinel in an Ultra-Refractory Inclusion from CO Chondrite (abstract): Lunar and Planetary Science Conference XXXII, abstract #1557. (Mar 2001). |
| ⓘ Pigeonite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Reference: Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003). |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 Description: Pyroxene population in chondrules and amoeboidal olivine aggregates (AOAs) includes numerous low-Ca pyroxenes. Ca-rich diopside more prominent in high-temperature aggregates. Reference: Komatsu, M., Krot, A. N., Miyamoto, M. & Keil, K. (2005) EBSD Study of Amoeboid Olivine Aggregates with Low-Ca Pyroxenes in the Y-81020 CO3.0 Chondrite (abstract): Annual Lunar and Planetary Science Conference XXXVI, abstract #1573. (March 2005). |
| ⓘ Spinel Formula: MgAl2O4 Reference: Graham, A. L., Yanai, K., Kojima, H. & Ikadai, S. (1985) Yamato 81020 and Yamato 82042; Two New Carbonaceous Chondrites from Antarctica: Meteoritics 20 (4): 654-655. (Dec 1985).; Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.; Yurimoto, H., Rubin, A. E., Itoh, S. & Wasson, J. T. (2001) Non-Stoichiometric Al-rich Spinel in an Ultra-Refractory Inclusion from CO Chondrite (abstract): Lunar and Planetary Science Conference XXXII, abstract #1557. (Mar 2001). |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Cohenite | 1.BA.05 | Fe3C |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Corundum | 4.CB.05 | Al2O3 |
| ⓘ | Grossite | 4.CC.15 | CaAl4O7 |
| ⓘ | Hibonite | 4.CC.45 | CaAl12O19 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Perovskite | 4.CC.30 | CaTiO3 |
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| Group 9 - Silicates | |||
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | var. Fassaite | 9.DA.15 | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| ⓘ | Fayalite | 9.AC.05 | Fe2+2SiO4 |
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| ⓘ | Gehlenite | 9.BB.10 | Ca2Al[AlSiO7] |
| ⓘ | Hedenbergite | 9.DA.15 | CaFe2+Si2O6 |
| ⓘ | Pigeonite | 9.DA.10 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Melilite Group' | - | Ca2M(XSiO7) |
| ⓘ | 'Meteoritic Iron' | - | |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Cohenite | Fe3C |
| O | Oxygen | |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Grossite | CaAl4O7 |
| O | ⓘ Melilite Group | Ca2M(XSiO7) |
| O | ⓘ Perovskite | CaTiO3 |
| O | ⓘ Hibonite | CaAl12O19 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| O | ⓘ Enstatite | Mg2Si2O6 |
| O | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| O | ⓘ Fayalite | Fe22+SiO4 |
| O | ⓘ Hedenbergite | CaFe2+Si2O6 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Na | Sodium | |
| Na | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Mg | Magnesium | |
| Mg | ⓘ Spinel | MgAl2O4 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Mg | ⓘ Enstatite | Mg2Si2O6 |
| Mg | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Al | Aluminium | |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Al | ⓘ Grossite | CaAl4O7 |
| Al | ⓘ Hibonite | CaAl12O19 |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Si | Silicon | |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Melilite Group | Ca2M(XSiO7) |
| Si | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Si | ⓘ Enstatite | Mg2Si2O6 |
| Si | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| Si | ⓘ Fayalite | Fe22+SiO4 |
| Si | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | Calcium | |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Ca | ⓘ Grossite | CaAl4O7 |
| Ca | ⓘ Melilite Group | Ca2M(XSiO7) |
| Ca | ⓘ Perovskite | CaTiO3 |
| Ca | ⓘ Hibonite | CaAl12O19 |
| Ca | ⓘ Gehlenite | Ca2Al[AlSiO7] |
| Ca | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ti | Titanium | |
| Ti | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Ti | ⓘ Perovskite | CaTiO3 |
| Fe | Iron | |
| Fe | ⓘ Augite var. Fassaite | (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6] |
| Fe | ⓘ Cohenite | Fe3C |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Fayalite | Fe22+SiO4 |
| Fe | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Graham, A. L., Yanai, K., Kojima, H. & Ikadai, S. (1985) Yamato 81020 and Yamato 82042; Two New Carbonaceous Chondrites from Antarctica: Meteoritics 20 (4): 654-655. (Dec 1985).
Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995).
Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Yurimoto, H., Rubin, A. E., Itoh, S. & Wasson, J. T. (2001) Non-Stoichiometric Al-rich Spinel in an Ultra-Refractory Inclusion from CO Chondrite (abstract): Lunar and Planetary Science Conference XXXII, abstract #1557. (Mar 2001)
Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract no.1490. (Mar 2003).
Komatsu, M., Krot, A. N., Miyamoto, M. & Keil, K. (2005) EBSD Study of Amoeboid Olivine Aggregates with Low-Ca Pyroxenes in the Y-81020 CO3.0 Chondrite (abstract): Annual Lunar and Planetary Science Conference XXXVI, abstract #1573. (March 2005).
Tenner, T. J., Ushikubo, T., Kurahashi, E., Kita, N. T. & Nagahara, H. (2011) Oxygen Isotopic Measurements of Phenocrysts in Chondrules from the Primitive Carbonaceous Chondrite Yamato 81020: Evidence for Two Distinct Oxygen Isotope Reservoir. Lunar and Planetary Science Conference XLII. LPI Contribution #1608: p.1426. (March 2011).
Krot, A. N., Doyle, P. & Nagashima, K. (2013) Secondary Fayalite, Hedenbergite, and Magnetite in the CO3.0-3.1 Carbonaceous Chondrites Y-81020, EET 90043, and MAC 88107: Lunar and Planetary Science Conference XLIV. LPI Contribution #1719: p.1754. (Mar 2013).
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?sea=Y-81020&sfor=names&ants=&falls=&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=All&mblist=All&rect=&phot=&snew=0&pnt=Normal%20table&code=29081 - Y-81020@MetBullDatabase
http://adsabs.harvard.edu/abs/2013M%26PSA..76.5135D - Oxygen isotopes
http://www.lpi.usra.edu/meetings/lpsc2013/pdf/1754.pdf -secondary fayalite & hedenbergite.
http://adsabs.harvard.edu/abs/2013M%26PSA..76.5135D - Oxygen isotopes
http://www.lpi.usra.edu/meetings/lpsc2013/pdf/1754.pdf -secondary fayalite & hedenbergite.
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