NWA 2724 is a single-stone meteorite that was recovered out of the Moroccan Sahara in 2004. It was analyzed by Dr. Ted Bunch at NAU and officially classified as a polymict eucrite with low shock and minimal weathering. This meteorite is rarely seen on the market now and this specimen comes from an old collection that belonged to a retired engineer from the NASA Hubble program.
This specimen is a professionally-prepared slice that is polished smooth on both sides. It shows a wealth of detail in the matrix and weighs approx. 4.6 grams.
This piece comes with a deluxe CrystalAir membrane box and the original labeling and specimen card.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown.
From the Meteoritical Bulletin entry on NWA 2724 -
Northwest Africa 2724
Find: 2004
Achondrite (eucrite, polymict)
History: A 3804 g crusted complete stone waspurchased in Erfoud, Morocco, in 2004.
Petrography: (J. Wittke and T. Bunch, NAU) Thespecimen mostly consists of cumulate basalt clasts that range fromcoarse-grained (~2 mm) to very fine-grained (~0.1 mm) with less than 5 vol% ofsubophitic basalts observed. Cumulate basaltic clasts are unusually low inilmenite, chromite, and metal compared with other cumulate eucrites.
Composition: Despite the large range in grain size, pyroxenecompositions show a rather narrow range: low-Ca pyroxenes (Fs59.1–62Wo3.2–3.8),pigeonite (Fs46.5–51Wo12.4–16.6), Ca-rich pyroxenes (Fs40–2.1Wo30.5–40.5),plagioclase (An89.4–92.7).
Classification: Achondrite (eucrite, polymict); lowshock, minimal weathering.
Specimens: A 34 g type specimen is on deposit at NAU*.E. Thompson holds the main mass.
