The LL group includes many of the most primitive ordinary chondrites, including the well-studied (type 3.0) chondrite. Structural composition LL chondrites contain the largest of the ordinary chondrite groups, averaging around 1 millimetre (0.039 in) diameter. Other minerals include Fe–Ni, (FeS), or feldspathic glass, and phosphates.

That means that most of the iron is present as iron oxide (FeO) in the silicates olivine contains 26 to 32 mol% (Fa). Chemical composition They contain 19–22% total iron and only 0. The material makeup of, the asteroid visited by the spacecraft which landed on it and brought particles back to Earth also proved to be type LL chondrite. The composition of the is that of a LL chondrite meteorite. The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the, and LL chondrite groups respectively. Paragould meteorite, an LL5 The LL chondrites are a group of stony, the least abundant group of the, accounting for about 10–11% of observed ordinary-chondrite falls and 8–9% of all meteorite falls (see ).