Schaap-Kooi meteorite, Fraserburg, Karoo Hoogland Local Municipality, Namakwa District Municipality, Northern Cape, South Africai
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Latitude & Longitude (WGS84):
32° 4' 59'' South , 21° 19' 59'' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fraserburg | 3,029 (2018) | 25.2km |
Ordinary chondrite (H4)
Find, 1910; 2.7 kg
A single 2.7 kg stone was recovered on the farm Schaap-Kooi SE of Fraserburg. Some unusually chromite-rich chondrules have been observed. Compositionally, bulk iron contents (26.32 wt% Fe), mostly equilibrated olivine (Fa19), and nearly equilibrated low Ca-pyroxene are characteristic of H-group chondrites. Mineralogically the meteorite consists primarily of dominant olivine accompanied by pyroxene along with minor plagioclase, troilite, and Fe-Ni metal. Accessory chromite and minor copper, ilmenite, and other sulfides have also been reported.
An unusually ancient U,Th:He gas release age of t= 4.56 Ga indicates that Schaap-kooi meteoroid was largely sequestered from of the residues of catastrophic collisions suffered by so many meteorites during the long interval between formation on a putative ancient original parent body and their eventual entry into the earth's atmosphere as a very small meteoroid and an even smaller recovered meteorite.
The main mass has been held at the South African Museum in Capetown.
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:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine composition (Fa19) characteristic of H chondrite chemical group. |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Isocubanite Formula: CuFe2S3 |
| ⓘ Mackinawite Formula: FeS |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 |
| ⓘ Taenite Formula: (Fe,Ni) |
| ⓘ 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 | (Fe,Ni) |
| 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 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | '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 | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Fayalite-Forsterite Series | |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Fayalite-Forsterite Series | |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| S | Sulfur | |
| S | ⓘ Isocubanite | CuFe2S3 |
| S | ⓘ Mackinawite | FeS |
| S | ⓘ Troilite | FeS |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Native Iron | Fe |
| Fe | ⓘ Isocubanite | CuFe2S3 |
| Fe | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Mackinawite | FeS |
| Fe | ⓘ Taenite | (Fe,Ni) |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Ni | Nickel | |
| Ni | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Fe,Ni) |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Isocubanite | CuFe2S3 |
Other Regions, Features and Areas containing this locality
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References
Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0
Ramdohr, Paul (1967) Chromite and chromite chondrules in meteorites—I. Geochimica et Cosmochimica Acta, 31 (10) 1961-1967 doi:10.1016/0016-7037(67)90135-4
