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Benton meteorite, Benton, Canterbury Parish, York Co., New Brunswick, Canadai
| Regional Level Types | |
|---|---|
| Benton meteorite | Meteorite Fall Location |
| Benton | Town |
| Canterbury Parish | Parish |
| York Co. | County |
| New Brunswick | Province |
| Canada | Country |
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Latitude & Longitude (WGS84):
45° 57' North , 67° 33' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Ordinary chondrite, brecciated (LL6,br; S3)
Fell, 16 January 1899; 2.84 kg, 2 stones
Two nearly identical stones (1500 g; 1340 g) fell. The interior of the meteorite consists primarily of light-colored clasts embedded in a darker matrix. Clasts within the matrix, mostly olivine and orthopyroxene, are largely equilibrated with the uncommon chondrules and a few larger (50-100 µm) grains. Olivine (Fa30.5) and orthopyroxene (Fs~26) compositions are characteristic of the LL6 geochemical group of ordinary chondrites. Dominant olivine and lesser orthopyroxene along with accompanying albitic plagioclase, troilite and Fe-Ni metal account for most of the meteorite's mass. Fe-Ni metal phases include taenite [sometimes cloudy], tetrataenite, and rare kamacite. Reported accessory and minor phases include chromite, diopsidic clinopyroxene, ilmenite, merrillite, and isocubanite. Post-brecciation and post-annealing features (planar fractures, undulose extinction, incipient mosaicism) are present in various shock-veins. A relatively recent and thorough petrographic and mineralogical review was provided by Walton & Spray (2003). A cosmic ray exposure age of 29.2 Ma has also been reported.
LL chondrites represent ~10% of all meteorite falls. Benton is one of 43 witnessed and confirmed falls classified as exactly 'LL6' chondrites at the Meteoritical Bulletin Database as 2017 began.
The second stone has been held by the Geological Society of Canada (Ottawa). The first stone has been distributed to several institutions.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 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:
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ 'Clinopyroxene Subgroup' |
| ⓘ Diopside Formula: CaMgSi2O6 Description: Composition of 'Clinopyroxene' [SiO2 - 53.75 wt%; FeO- 6.5 wt%; MgO- 6.3 wt%; CaO- 21.15 wt%] is that of diopside. |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Isocubanite Formula: CuFe2S3 |
| ⓘ Merrillite Formula: Ca9NaMg(PO4)7 |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Orthopyroxene Subgroup' |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Plagioclase composition [Or3.7 An10.3 Ab85.9], Van Schmus & Ribbe (1968). References: |
| ⓘ Taenite Formula: (Ni,Fe) |
| ⓘ Tetrataenite Formula: FeNi |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Ni,Fe) |
| ⓘ | Tetrataenite | 1.AE.10 | FeNi |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Isocubanite | 2.CB.55b | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
| Group 9 - Silicates | |||
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| Unclassified | |||
| ⓘ | 'Clinopyroxene Subgroup' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
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