This attractive HED Achondrite (Diogenite) NWA 7831 was found at Saguia el Hamra, Western Sahara, on 3rd March 2013. It was discovered buried in the ground near Chouichiyat and excavated by local villagers.
A Single large mass of at least 20kg was recovered, composed of yellow-green crystalline material with pale orange weathering products along numerous fractures. The meteorite disintegrated into thousands of smallish fragments during excavation.
This interesting Diogenite is composed almost entirely of translucent yellow-green orthopyroxene with very sparse, tiny grains of Ni-free metal, troilite, chromite, anorthite, silica polymorph and clinopyroxene, secondly pale orange, clay-like deposits.ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.