|Composition||olivine, plagioclase, clinopyroxene, iron-sulfide, chromite, chlorapatite, pentlandite, meteoric iron, melt inclusions|
|Found date||26 May 1974|
|TKW||202.85 grams (7.155 oz) (2 fragments)|
The mineral composition of the Brachina meteorite is olivine (80%), plagioclase (10%), Clinopyroxene (5.5%), iron-sulfide (3%), chromite (0.5%), chlorapatite (0.5%) and pentlandite (0.3%) and traces of meteoric iron. Melt inclusions consist of glass with orthopyroxene and anorthoclase. The chemical and mineralogical composition is similar to the Chassigny meteorite, but the trace elements are fundamentally different.
The meteorite was classified as a chassignite in 1978, but in 1983 trace element analysis showed that the Brachina meteorite was fundamentally different from Chassigny. It was therefore proposed that the meteorite should be the type specimen of a new meteorite class, the brachinites. This classification has remained valid since then.