EucriteMost common type of achondrite meteorite and a member of the HED group. Eucrites are basalts composed primarily of pigeonite and anorthite (An60-98). Eucrites have been placed into three subgroups based on mineralogical and chemical differences. • Non-cumulate eucrites represent the upper crust that solidified on a magma ocean after Click on Term to Read More, monomict (tentative classification)
Found 2006
coordinates not recorded
A single 16 g stone covered with a black
fusion crustMelted exterior of a meteorite that forms when it passes through Earth’s atmosphere. Friction with the air will raise a meteorite’s surface temperature upwards of 4800 K (8180 °F) and will melt (ablate) the surface minerals and flow backwards over the surface as shown in the Lafayette meteorite photograph below. Click on Term to Read More was found in the Sahara Desert and subsequently purchased by S. Turecki from Moroccan dealer A. Habibi. A type sample was submitted to Northern Arizona University (T. Bunch and J. Wittke) for analysis and classification but the provenance link has since been lost. It is presumed that this
meteoriteWork in progress. A solid natural object reaching a planet’s surface from interplanetary space. Solid portion of a meteoroid that survives its fall to Earth, or some other body. Meteorites are classified as stony meteorites, iron meteorites, and stony-iron meteorites. These groups are further divided according to their mineralogy and Click on Term to Read More is a eucrite with a texture and mineralogy consistent with that of a
monomict brecciaType of breccia whose clasts are composed of a single (mono-) rock type, possibly all from a single rock unit (e.g., L6 with L6). Monomict breccias are rare on the Moon because meteoroid impacts tend to mix different kinds of rocks. The example is a terrestrial granite breccia. Image Source:.
The photo above shows a 2.1 g complete slice of this Northwest Africa eucrite. The top photo below shows the small fusion-crusted stone after initial sampling. The bottom photo is a different view of a complete slice from this eucrite.
Photos courtesy of Aziz Habibi
