Hammadah al Hamra 346 (Ghadamis) is an L6 chondrite meteorite, with a significant find linked to a fireball witnessed on August 26, 2018, over the southern Jabal al Gharbi District of Libya. Hundreds of stones, totaling over 100 kg, were discovered in early 2019 by meteorite hunters, scattered across several kilometers about 95 km southwest of Ash Shuwayrif. These freshly fusion-crusted stones are believed to originate from the 2018 meteor event due to their lack of weathering.

The meteorites display a matte black fusion crust, largely free of wind abrasion, and feature shallow regmaglypts (thumbprint-like impressions). The interior of the stones is light gray, with minimal weathering or oxidation, though some show minor brownish staining where metal is exposed. These characteristics suggest the stones fell recently, likely linked to the observed fireball.

As an L6 chondrite, the Ghadamis meteorite has undergone significant thermal metamorphism, resulting in a nearly homogeneous internal structure with minimal visible chondrules. It primarily consists of silicate minerals, such as olivine and pyroxene, alongside iron-nickel metal and sulfides. Despite this alteration, L6 chondrites retain important information about early solar system processes.

They are also commonly traded under the name "Ghadamis", although there are several other Ghadamis or Gadamis classifications since this name refers to the desert region in Libya where they were found.

These stones are highly valued by collectors for their pristine condition and scientific value, providing insights into asteroid evolution and the events that shape meteorite formation.