Meteorite Errachidia 004 – Morocco
Type: Primitve achondrite / Winonaite
Locality: Morocco, Northwest Africa
Weight: 0,13g
Dimensions: 5 x 4 x 3 mm
Year found: 2020
Total known weight: 2,64 kg
Surface treatment: none – raw
Packaging: transprent plastic box (5,8 x 3,8 x 1,6 cm)
| Category: | Errachidia 004 |
|---|---|
| By name: | Errachidia 004 |
| ? Type: | Stony |
| Subspecies: | Achondrite |
| ? Surface treatment: | Natural (raw) |
| Packaging: | In box |
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Errachidia 004 Meteorite – Primitive Achondrite from Morocco
Errachidia 004 was discovered in 2020 in Morocco, in the Errachidida region. This meteorite is classified as a primitive achondrite of the winonaite group, indicating its ancient origin. The total recovered mass is approximately 2.64 kg. Winonaites have a complex formation history dating back to the early solar system.
Winonaites are a rare group of primitive achondritic meteorites. They have a composition similar to chondrites but have undergone partial melting and differentiation. They include silicates (forsterite, enstatite, augite, plagioclase) and metals (kamacite, taenite). Named after the Winona find in Arizona, USA.
Composition
Errachidia 004 comprises two main lithologies – one low-metal and one high-metal. The low-metal lithology contains forsterite, enstatite, augite, and sodic plagioclase. The high-metal lithology has significant kamacite, taenite and Widmanstätten patterns.
- The low-metal lithology features a granoblastic texture, with average grain size around 110 µm. Kamacite and troilite are dispersed, some altered into iron oxides. This reflects mild shock and space weathering.
- The high-metal lithology includes up to 80% metal and shows Widmanstätten structure. It contains kamacite, taenite, plessite, troilite, and schreibersite. Silicate inclusions consist of sodic plagioclase, augite, and enstatite with 350 µm grains.
These two distinct lithologies reveal a complex geological history of Errachidia 004.