Atlanta meteorite, Winn Parish, Louisiana, USAi
| Regional Level Types | |
|---|---|
| Atlanta meteorite | Meteorite Fall Location |
| Winn Parish | Parish |
| Louisiana | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 48' North , 92° 45' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Atlanta | 154 (2017) | 1.3km |
| Winnfield | 4,565 (2017) | 17.3km |
| Calvin | 225 (2017) | 18.6km |
| Montgomery | 721 (2017) | 19.9km |
| Saint Maurice | 323 (2011) | 20.3km |
Mindat Locality ID:
256625
Long-form identifier:
mindat:1:2:256625:5
GUID (UUID V4):
49300e94-75bd-4404-a137-e61309ff7a00
Enstatite Chondrite, low-iron [EL6; S2], brecciated
1938 find, 5.5 kg
The Atlanta meteorite was sent to Harvey H. Nininger, the renown American (US) meteorite tracker in 1938 and is one of only 3 meteorites recovered in the state of Louisiana. Enstatite Chondrites are characterized by the dominant presence of the iron-poor Enstatite, accessory Fe-Ni metal and Troilite, plus a number of very reduced mineral phases. Many of these phases are extremely rare or unknown in terrestrial rocks. Atlanta belongs to the EL chemical group further characterized by the invariable presence of ferroan alabandite. Chondrites of petrologic Type EL6 are additionally characterized by abundant chondrules, homogenized olivine, and recrystallized fine-grained matrix. EL6 chondrites are by far the most abundant EL petrologic type.
Atlanta exhibits an unusual Troilite-rich clast and a Kamacite vein which are presumably due to early impact(s). Indeed, Rubin (1997) has argued that Atlanta and other EL breccias experienced high shock levels [S3-S5] which were subsequently overprinted by metamorphic heating and a later, somewhat milder S2 impact.
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:
| ⓘ Alabandite Formula: MnS |
| ⓘ Cubanite Formula: CuFe2S3 |
| ⓘ Daubréelite Formula: Fe2+Cr3+2S4 |
| ⓘ Enstatite Formula: Mg2Si2O6 |
| ⓘ Graphite Formula: C |
| ⓘ Iron Formula: Fe |
| ⓘ Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ Iron var. Martensite Formula: Fe |
| ⓘ Oldhamite Formula: (Ca,Mg)S |
| ⓘ Osbornite Formula: TiN |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Plagioclase is albitic (An18) {Mason, 1966);Plagioclase grains (roughly 100 µm diameters)exhibit polysynthetic twinning (Rubin,1983) |
| ⓘ Schreibersite Formula: (Fe,Ni)3P |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Iron var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | 1.AE.05 | Fe | |
| ⓘ | var. Martensite | 1.AE.05 | Fe |
| ⓘ | Osbornite | 1.BC.15 | TiN |
| ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Cubanite | 2.CB.55a | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Alabandite | 2.CD.10 | MnS |
| ⓘ | Oldhamite | 2.CD.10 | (Ca,Mg)S |
| ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
| Group 9 - Silicates | |||
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| Unclassified | |||
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Graphite | C |
| N | Nitrogen | |
| N | ⓘ Osbornite | TiN |
| O | Oxygen | |
| O | ⓘ Enstatite | Mg2Si2O6 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Enstatite | Mg2Si2O6 |
| Mg | ⓘ Oldhamite | (Ca,Mg)S |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Enstatite | Mg2Si2O6 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| P | Phosphorus | |
| P | ⓘ Schreibersite | (Fe,Ni)3P |
| S | Sulfur | |
| S | ⓘ Alabandite | MnS |
| S | ⓘ Cubanite | CuFe2S3 |
| S | ⓘ Daubréelite | Fe2+Cr23+S4 |
| S | ⓘ Oldhamite | (Ca,Mg)S |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Troilite | FeS |
| Ca | Calcium | |
| Ca | ⓘ Oldhamite | (Ca,Mg)S |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Osbornite | TiN |
| Cr | Chromium | |
| Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Mn | Manganese | |
| Mn | ⓘ Alabandite | MnS |
| Fe | Iron | |
| Fe | ⓘ Cubanite | CuFe2S3 |
| Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Fe | ⓘ Iron | Fe |
| Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Schreibersite | (Fe,Ni)3P |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Iron var. Martensite | Fe |
| Ni | Nickel | |
| Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Schreibersite | (Fe,Ni)3P |
| Cu | Copper | |
| Cu | ⓘ Cubanite | CuFe2S3 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Gulf of Mexico BasinBasin
- Sabine DomainDomain
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References
