Grove Mountains （GRV） 020043 is a special chondrite which has the same mineral assemblage of ordinary chondrite，but has its mineral compositions beyond the ordinary chondrites. The stone is composed of Low-Ca pyroxene(40 vol%), olivine(24vol%), diopside(8 vol%), plagioclase(10vol%) ,troilite(4 vol%), Fe-Ni alloy (14 vol%), and trace of chromite and apatite. The silicates have homogeneous compositions，e.g. olivine (Fa10.4-12.4，average Fa11.0) and Low-Ca pyroxene (Fs10.1-11.6, average Fs10.9), diopside (Wo46.1-47.1En49.0-49.2Fs3.8-4.4,average Wo46.6En49.3Fs4.0), plgioclase (Ab55.7-72.5Or2.1-5.0An24.0-42.1,average Ab67.6Or3.4An29.0). Some chondrules in this meteorite are well defined with sharp edges. The chondrules aboundence is 37 vol%. The matrix of the meteorite is moderately recrystallized. Its petrologic type is 4. Consideration to its oxidation state, olivine model aboundence and silicates’ chemical composition, this chondrite classed as a transition chondrite between E and H group.