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Elsinora meteorite, Delalah Co., New South Wales, Australiai
| Regional Level Types | |
|---|---|
| Elsinora meteorite | Meteorite Fall Location |
| Delalah Co. | County |
| New South Wales | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
29° 26' 59'' South , 143° 36' 0'' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Ordinary chondrite, (H5)
Find, 1922; 1797 g
A stone [roughly 15x30 cm in dimensions] was found, but only 2 fragments have been preserved. Inspections reveal indistinct chondrules and chondrule fragments within a largely equilibrated matrix interrupted by irregular, compositionally exotic chondrules and shock veins [now weathered]. Compositionally, equilibrated olivine (Fa17) and low Ca-(orthopyroxene (Fs17.5) are characteristic of the H-chondrite geochemical group. One unusual 5mm unequilibrated olivine-rich chondrule (Fa6-19) is also reported. Mineralogically the meteorite consists primarily of dominant olivine and lesser orthopyroxene accompanied by minor Fe-Ni metal (kamacite and taenite), plagioclase, and troilite. Accessory chromite and minor amounts of copper, ilmenite, isocubanite are also found. Hydrous iron oxides, including goethite in cracks and limonite stains between metal grains, are indicative of significant weathering.
A U-He age of ~2.86 Ga is reported, possibly indicative of a major collision involving an intermediate parent body (IPB) subsequent to the original formation of a putative H-chondrite parent body. A cosmic ray exposure (CRE) age of t ~7.2 Ma has also been reported and suggests that Elsinora is itself a fragment of one or two subsequent IPB collisions producing a large fraction of the current stream of H5 chondrites. (The majority of H5 chondrites have CRE ages in the 6-10 Ma range.)
The main mass (1028 g) has been at the Australian Museum in Sydney [in 2017].
Find, 1922; 1797 g
A stone [roughly 15x30 cm in dimensions] was found, but only 2 fragments have been preserved. Inspections reveal indistinct chondrules and chondrule fragments within a largely equilibrated matrix interrupted by irregular, compositionally exotic chondrules and shock veins [now weathered]. Compositionally, equilibrated olivine (Fa17) and low Ca-(orthopyroxene (Fs17.5) are characteristic of the H-chondrite geochemical group. One unusual 5mm unequilibrated olivine-rich chondrule (Fa6-19) is also reported. Mineralogically the meteorite consists primarily of dominant olivine and lesser orthopyroxene accompanied by minor Fe-Ni metal (kamacite and taenite), plagioclase, and troilite. Accessory chromite and minor amounts of copper, ilmenite, isocubanite are also found. Hydrous iron oxides, including goethite in cracks and limonite stains between metal grains, are indicative of significant weathering.
A U-He age of ~2.86 Ga is reported, possibly indicative of a major collision involving an intermediate parent body (IPB) subsequent to the original formation of a putative H-chondrite parent body. A cosmic ray exposure (CRE) age of t ~7.2 Ma has also been reported and suggests that Elsinora is itself a fragment of one or two subsequent IPB collisions producing a large fraction of the current stream of H5 chondrites. (The majority of H5 chondrites have CRE ages in the 6-10 Ma range.)
The main mass (1028 g) has been at the Australian Museum in Sydney [in 2017].
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 valid minerals.
Meteorite/Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 References: |
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine composition [Fa17] in Mason,1963. Exotic unequilibrated Olivine [Fa 6-19] also reported in Mason,1974. References: Leonard, Frederick C. (1954) The Classification of the Meteoritic Minerals and Its Application to the Simplified Classification of Meteorites*. Meteoritics, 1 (2) 150-168 doi:10.1111/j.1945-5100.1954.tb01326.x |
| ⓘ Forsterite Formula: Mg2(SiO4) Description: Forsterite, sensu stricto, found in large chondrule with variable Olivine (Fa 6-19). |
| ⓘ Goethite Formula: Fe3+O(OH) Description: Goethite found in cracks. |
| ⓘ Isocubanite Formula: CuFe2S3 |
| ⓘ 'Limonite' Description: Limonite frequently present between grains. |
| ⓘ Mackinawite Formula: FeS |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Orthopyroxene Subgroup' References: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ Taenite Formula: (Ni,Fe) |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Ni,Fe) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Isocubanite | 2.CB.55b | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Mackinawite | 2.CC.25 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Goethite | 4.FD.10 | Fe3+O(OH) |
| Group 9 - Silicates | |||
| ⓘ | Forsterite | 9.AC.05 | Mg2(SiO4) |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Forsterite | Mg2(SiO4) |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Fayalite-Forsterite Series | |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Forsterite | Mg2(SiO4) |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Forsterite | Mg2(SiO4) |
| Si | ⓘ Fayalite-Forsterite Series | |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| S | Sulfur | |
| S | ⓘ Isocubanite | CuFe2S3 |
| S | ⓘ Mackinawite | FeS |
| S | ⓘ Troilite | FeS |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Native Iron | Fe |
| Fe | ⓘ Isocubanite | CuFe2S3 |
| Fe | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Mackinawite | FeS |
| Fe | ⓘ Taenite | (Ni,Fe) |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Ni | Nickel | |
| Ni | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Ni,Fe) |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Isocubanite | CuFe2S3 |
Other Regions, Features and Areas containing this locality
Australia
- Eromanga BasinBasin
- South Australia
- Lake Eyre BasinBasin
- Thomson OrogenOrogen
Australian PlateTectonic Plate
- North Delamerian OrogenOrogenic Belt
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References
Leonard, Frederick C. (1954) The Classification of the Meteoritic Minerals and Its Application to the Simplified Classification of Meteorites*. Meteoritics, 1 (2) 150-168 doi:10.1111/j.1945-5100.1954.tb01326.x
Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0
Wasson, John T., Wang, Sichao (1991) The histories of ordinary chondrite parent bodies: U,Th-He age distributions. Meteoritics, 26 (2) 161-167 doi:10.1111/j.1945-5100.1991.tb01033.x
