Benoni meteorite, Benoni, City of Ekurhuleni Metropolitan Municipality, Gauteng, South Africai
| Regional Level Types | |
|---|---|
| Benoni meteorite | Meteorite Fall Location |
| Benoni | Town |
| City of Ekurhuleni Metropolitan Municipality | Municipality |
| Gauteng | Province |
| South Africa | Country |
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Latitude & Longitude (WGS84):
26° 10' South , 28° 25' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Witwatersrand Gem and Mineral Club (WITS) | Cresta, Johannesburg, Gauteng | 44km |
| Pretoria Gem and Mineral Club (PGMC) | Menlo Park, Pretoria, Gauteng | 47km |
Ordinary chondrite, gas-rich (H6)
Fell, 25 July 1943, 17:35 hrs; 3.88 kg, single stone
A stone fell 55 paces from Mr. M. J. Groenewald in the Benoni area. The stone was partially covered with a fusion crust. Olivine (Fa~19) and low Ca-orthopyroxene (Fs~18) compositions are characteristic of the H-chondrite geochemical group. Mineralogically the meteorite consists primarily of dominant olivine and orthopyroxene along with minor amounts of Fe-Ni metal (kamacite and taenite) and troilite. Accessory chromite, copper, graphite, rutile, and minor sulfides are also reported.
A cosmic-ray exposure (CRE) age of ~9 Ma has been reported.
The H (relatively high in total iron) chondrites are the second largest group of ordinary chondrite falls and represent nearly 40% of well-classified and witnessed meteorite falls. As of late May 2017 was Benoni was one of the 94 meteorite falls classified exactly as 'H6' chondrites.
The main mass has been kept at the University of Witwatersand's Geological Museum.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
11 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 (Fa18), preferred value in Catalogue of Meteorites (5/e), Olivine Composition typical of H chondrites [Normal Range: Fa17.3-20.2, following Rubin,1990] |
| ⓘ Graphite Formula: C |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Isocubanite Formula: CuFe2S3 |
| ⓘ Mackinawite Formula: FeS |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Orthopyroxene Subgroup' Description: Composition of Orthopyroxene (Fs18) typical of H chondrites, Mason (1962). |
| ⓘ Rutile Formula: TiO2 |
| ⓘ 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) |
| ⓘ | Graphite | 1.CB.05a | C |
| 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 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Graphite | C |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Fayalite-Forsterite Series | |
| Mg | Magnesium | |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Si | Silicon | |
| Si | ⓘ Fayalite-Forsterite Series | |
| S | Sulfur | |
| S | ⓘ Isocubanite | CuFe2S3 |
| S | ⓘ Mackinawite | FeS |
| S | ⓘ Troilite | FeS |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Rutile | TiO2 |
| 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 | ⓘ Magnetite | Fe2+Fe23+O4 |
| 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
AfricaContinent
African Plate
- Karoo basinBasin
Somali PlateTectonic Plate
South Africa
- ⭔TransvaalProvince
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References
Mason, Brian (1962, May 24th) The Classification of Chondritic Meteorites. American Museum Novitates 2085. The American Museum of Natural History
Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0
