Mount Egerton meteorite, Upper Gascoyne Shire, Western Australia, Australiai
Regional Level Types | |
---|---|
Mount Egerton meteorite | Meteorite Fall Location |
Upper Gascoyne Shire | Shire |
Western Australia | State |
Australia | Country |
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Latitude & Longitude (WGS84):
24° 46' South , 117° 42' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Deposit first discovered:
1941
Köppen climate type:
Mindat Locality ID:
27731
Long-form identifier:
mindat:1:2:27731:3
GUID (UUID V4):
cc781a48-5f81-4aaf-80fd-290048a40192
Aubrite (Enstatite achondrite); found in 1941.
Mt Egerton is located approximately 200 kilometres north-west of Meekatharra, or 80 kilometres east south-east of Mt Augustus, on Woodlands Station, in remote hilly semi arid country. The initial 1.7 kg meteorite fragment was discovered by a local propector in 1941, 15 kilometres north east of Mt Egerton. Subsequent searches located thousands of small fragments under 1 gram. As a result, this material is found commonly for sale. It is classed as an enstatite chondrite meteorite where enstatite is the primary metal discoloured over time by weathering. The meteorite is composed of centimetre sized enstatite crystals with abundant aubrite. Ni sillicide perryite is present, and has been available as micro specimens, accompanied by SEM photographs.
The meteorite's metal phase reveals an orientated fine structure of etching similar to a widmanstatten pattern. Within this structure is perryite inclusions embedded in bands of Fe-Ni, enriched with nickel and contain kamacite. The perryite inclusions are found mainly at the intersections of the nickel bands, although some is also found above and below the bands.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
10 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 |
ⓘ Brezinaite Formula: Cr3S4 |
ⓘ Daubréelite Formula: Fe2+Cr3+2S4 |
ⓘ Diopside Formula: CaMgSi2O6 |
ⓘ Enstatite Formula: Mg2Si2O6 |
ⓘ Iron Formula: Fe |
ⓘ Iron var. Kamacite Formula: (Fe,Ni) |
ⓘ Perryite Formula: (Ni,Fe)5(Si,P)2 References: Britvin, S. N., Krivovichev, S. V., Vereshchagin, O. S., Vlasenko, N. S., Shilovskikh, V. V., Krzhizhanovskaya, M. G., Lozhkin, M. S., Obolonskaya, E. V., Kopylova, Y. O. (2021) Perryite, (Ni,Fe)16PSi5, from the Mount Egerton aubrite: the first natural P-Si-ordered phosphide-silicide. Journal of GEOsciences, 66 (4) 189-198 doi:10.3190/jgeosci.331 |
ⓘ Schreibersite Formula: (Fe,Ni)3P |
ⓘ 'Silica' |
ⓘ Taenite Formula: (Fe,Ni) |
ⓘ Troilite Formula: FeS |
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Iron var. Kamacite | 1.AE.05 | (Fe,Ni) |
ⓘ | 1.AE.05 | Fe | |
ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
ⓘ | Perryite | 1.BB.10 | (Ni,Fe)5(Si,P)2 |
ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Troilite | 2.CC.10 | FeS |
ⓘ | Alabandite | 2.CD.10 | MnS |
ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
ⓘ | Brezinaite | 2.DA.15 | Cr3S4 |
Group 9 - Silicates | |||
ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
Unclassified | |||
ⓘ | 'Silica' | - |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Diopside | CaMgSi2O6 |
O | ⓘ Enstatite | Mg2Si2O6 |
Mg | Magnesium | |
Mg | ⓘ Diopside | CaMgSi2O6 |
Mg | ⓘ Enstatite | Mg2Si2O6 |
Si | Silicon | |
Si | ⓘ Diopside | CaMgSi2O6 |
Si | ⓘ Enstatite | Mg2Si2O6 |
Si | ⓘ Perryite | (Ni,Fe)5(Si,P)2 |
P | Phosphorus | |
P | ⓘ Perryite | (Ni,Fe)5(Si,P)2 |
P | ⓘ Schreibersite | (Fe,Ni)3P |
S | Sulfur | |
S | ⓘ Alabandite | MnS |
S | ⓘ Brezinaite | Cr3S4 |
S | ⓘ Daubréelite | Fe2+Cr23+S4 |
S | ⓘ Troilite | FeS |
Ca | Calcium | |
Ca | ⓘ Diopside | CaMgSi2O6 |
Cr | Chromium | |
Cr | ⓘ Brezinaite | Cr3S4 |
Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
Mn | Manganese | |
Mn | ⓘ Alabandite | MnS |
Fe | Iron | |
Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
Fe | ⓘ Iron | Fe |
Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
Fe | ⓘ Perryite | (Ni,Fe)5(Si,P)2 |
Fe | ⓘ Schreibersite | (Fe,Ni)3P |
Fe | ⓘ Taenite | (Fe,Ni) |
Fe | ⓘ Troilite | FeS |
Ni | Nickel | |
Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
Ni | ⓘ Perryite | (Ni,Fe)5(Si,P)2 |
Ni | ⓘ Schreibersite | (Fe,Ni)3P |
Ni | ⓘ Taenite | (Fe,Ni) |
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Edmund BasinBasin
- Warakurna Large Igneous ProvinceGeologic Province
- West Australian ElementCraton
Australian PlateTectonic Plate
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Mount Egerton meteorite, Upper Gascoyne Shire, Western Australia, Australia