Akyumak meteorite, Akyumak village, Eleşkirt District, Ağri Province, Turkeyi
| Regional Level Types | |
|---|---|
| Akyumak meteorite | Meteorite Fall Location |
| Akyumak village | Village |
| Eleşkirt District | District |
| Ağri Province | Province |
| Turkey | Country |
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Latitude & Longitude (WGS84):
39° 55' North , 42° 49' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Iron meteorite, Octahedrite (IVA, Om)
Fall, 2 August 1981; 50 kg
Bright greenish lights and detonations accompanied the fall of the Akyumak meteorite just before it plunged into the ground creating a 50 cm diameter, 90 cm deep hole. The surface of the meteorite displays the normal combination of pits and regmaglypts occasioned by its fiery entry into the atmosphere. Small samples made available for study reveal a well-developed Widmanstätten pattern dominated by kamacite, taenite, and plessite. Plentiful Neumann bands indicative of either pre-terrestrial or entry shock are present. Finger plessite is often rimmed by taenite bands. Other phases were quite sparse in the available specimens— only daubréelite is mentioned in the early 1988 report. In a later metallurgical study, cohenite was also detected.
Akyumak is the latest and largest of the 4 witnessed IVA iron falls. The largest remnant mass (18 kg) is with the Department of Geology, University of Elâzig. It is possible that the Turkish literature has additional information, but these postings often lack English abstracts.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
4 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:
| ⓘ Cohenite Formula: Fe3C Description: Cohenite is labelled 'cementite' in the metallurgical literature. |
| ⓘ Daubréelite Formula: Fe2+Cr3+2S4 Description: Embedded in kamacite in Colakoglu & Ceylan (1988) photograph |
| ⓘ Native Iron Formula: Fe Description: Composition is nearly uniform 5.8 % Ni except at kamacite-taenite interfaces. |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) Description: Composition is nearly uniform 5.8 % Ni except at kamacite-taenite interfaces. |
| ⓘ 'Plessite' |
| ⓘ Taenite Formula: (Fe,Ni) Description: Taenite - Highest Ni content (~40%) at kamacite-taenite interfaces. |
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 | (Fe,Ni) |
| ⓘ | Cohenite | 1.BA.05 | Fe3C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
| Unclassified | |||
| ⓘ | 'Plessite' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Cohenite | Fe3C |
| S | Sulfur | |
| S | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Cr | Chromium | |
| Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Fe | Iron | |
| Fe | ⓘ Cohenite | Fe3C |
| Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
| Fe | ⓘ Native Iron | Fe |
| Fe | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Taenite | (Fe,Ni) |
| Ni | Nickel | |
| Ni | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Fe,Ni) |
Other Regions, Features and Areas containing this locality
AsiaContinent
Eurasian PlateTectonic Plate
Indian Plate (India Plate)
- Urumieh-Dokhtar Magmatic ArcVolcanic Arc
Turkey
- ⭔Eastern Anatolia RegionRegion
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