Description
Eucrite
Endcut – 24.34g. Sold with label/certificate of authenticity.
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Northwest Africa 12467 (NWA 12467)
(Northwest Africa)
Purchased: 2015 Jun
Classification: HED achondrite (Eucrite)
History: Purchased in june 2015 at Sainte Marie aux Mines mineral show.
Physical characteristics: Brownish crusted stone. Cut surface reveals light-gray interior.
Petrography: Igneous rock with brecciated variety of textures. Main minerals are pyroxene and plagioclase. Metal rich clasts. Accessory silica polymorph, metal, troilite, chromite and ilmenite.
Geochemistry: Low-Ca pyroxene Fs44.5±8.2Wo12.2±6.4 (n=13), rangeFs32.9-59.8Wo21.8-4.1, FeO/MnO=31.8±1.8. Plagioclase An86.0Ab13.3Or0.7 (n=2).
Classification: Eucrite.
Specimens: 9.65 g and a polished section at CEREGE. Main mass with Pierre-Marie Pelé.
Mass (g): 34.55
Pieces: 1
Class: Eucrite
Weathering grade: low
Ferrosilite (mol%): 44.5±8.2 (n=13)
Wollastonite (mol%): 12.2±6.4
Magnetic suscept.: 5.06
Classifier: J. Gattacceca, L. Krämer Ruggiu, CEREGE
Type spec mass (g): 9.65
Type spec location: CEREGE
Main mass: Pierre-Marie Pelé
Comments: Work name EU1A15; submitted by Lisa Kraemer Ruggiu.
