Macibini meteorite, King Cetshwayo District Municipality, KwaZulu-Natal, South Africai
| Regional Level Types | |
|---|---|
| Macibini meteorite | Meteorite Fall Location |
| King Cetshwayo District Municipality | District |
| KwaZulu-Natal | Province |
| South Africa | Country |
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Latitude & Longitude (WGS84):
28° 50' South , 31° 57' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| eSikhaleni | 49,265 (2018) | 6.4km |
| Empangeni | 28,093 (2012) | 9.7km |
| Richards Bay | 252,968 (2012) | 10.2km |
| Eshowe | 14,786 (2012) | 47.1km |
Fall 23 September 1936; 1.995 kg
Eucrite, Polymict
1.995 kg; 4 complete stones & 2 fragments
The Macibini meteorite consists almost entirely of well-mixed, grayish eucritic materials rich in fine-grained plagioclase and pyroxene accompanied by occasional clasts. Pyroxenes are quite variable with both Ca-poor and Ca-rich varieties as well as an unusually large range in Mg/Fe ratios. Plagioclase is mostly bytownite in composition, but anorthitic plagioclase is found in matrix and in some clasts. Small and variable amounts of both silicates (olivine, silica) and opaques (chromite, ilmenite, troilite, meteoritic iron) are found in both matrix and inclusions. Fe-rich pyroxenes and olivine, K-rich silicate glass plus a small component of diogenitic orthopyroxene indicate that while most of Macibini probably consists of locally derived components, this breccia is spiced with a few fragments of distant and/or deeper constituents from the original parent body.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
8 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) Description: In Anorthite Clast (and elsewhere) Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Description: Augite — Normally an exsolved phase in eucrites Reference: Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45.; Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Augite var. Ferroaugite Reference: Reid, A. M. (1974) The Macibini Meteorite and some thoughts on the Origin of Basaltic Achondrites: Meteoritics 9(4): 398-399. (Dec 1974); Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45. |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine (Fa 56-83 ) Reference: Desnoyers. C. & Jerome, D.Y. (1973) Olivine Compositions in Howardites and other achondritic meteorite (abstract): Meteoritics 8 (4): 344-345. (Dec 1973); Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45.; Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ 'Glass' Description: Silica-rich Glass often has an enhanced K2O content of uncertain origin Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Hedenbergite Formula: CaFe2+Si2O6 Reference: Reid, A. M. (1974) The Macibini Meteorite and some thoughts on the Origin of Basaltic Achondrites: Meteoritics 9(4): 398-399. (Dec 1974) |
| ⓘ Ilmenite Formula: Fe2+TiO3 Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Iron Formula: Fe Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. |
| ⓘ Iron var. Kamacite Formula: (Fe,Ni) Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. |
| ⓘ 'Meteoritic Iron' Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ 'Orthopyroxene Subgroup' Description: Orthopyroxene is Mg-rich consistent with probable diogenite source Reference: Reid, A. M. (1974) The Macibini Meteorite and some thoughts on the Origin of Basaltic Achondrites: Meteoritics 9(4): 398-399. (Dec 1974); Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Pigeonite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Reference: Reid, A. M. (1974) The Macibini Meteorite and some thoughts on the Origin of Basaltic Achondrites: Meteoritics 9(4): 398-399. (Dec 1974); Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45. |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Plagioclase (Ab7-21) Reference: Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45.; Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 Description: Pyroxene - large range (Fs19-61) according to Mason et al., (1979) Reference: Mason B., Jarosewich E. & Nelen J. A. (1979) The pyroxene-plagioclase achondrites. Smithson. Contrib. Earth Sci. 22: 27-45. |
| ⓘ 'Silica' Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
| ⓘ Troilite Formula: FeS Reference: Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 9 - Silicates | |||
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | var. Ferroaugite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Hedenbergite | 9.DA.15 | CaFe2+Si2O6 |
| ⓘ | Pigeonite | 9.DA.10 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Glass' | - | |
| ⓘ | 'Meteoritic Iron' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
| ⓘ | 'Silica' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Hedenbergite | CaFe2+Si2O6 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | Silicon | |
| Si | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| Ca | Calcium | |
| Ca | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Iron | Fe |
| Ni | Nickel | |
| Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Desnoyers. C. & Jerome, D.Y. (1973) Olivine Compositions in Howardites and other achondritic meteorite (abstract): Meteoritics 8 (4): 344-345. (Dec 1973)
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Reid, A. M. (1974) The Macibini Meteorite and some thoughts on the Origin of Basaltic Achondrites: Meteoritics 9(4): 398-399. (Dec 1974)
Buchanan, P. C., Lindstrom, D. J., Mittlefehldt, D. W., Koeberl, C. & Reimold, W. U. (2000) The South African eucrite Macibini: Meteoritics & Planetary Science 35 (6): 1321-1331. (Nov 2000)
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
External Links
http://www.lpi.usra.edu/meteor/metbull.php = Meteoritical Bulletin Database
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