ABSTRAKBatuan serpentinit adalah salah satu sumber mineral magnesit ini, diketahui memiliki kandungan unsur magnesium (Mg) besar, sehingga dapat dimanfaatkan sebagai bahan baku pupuk yang cukup menguntungkan, karena akan diperoleh unsur magnesium (Mg) dalam jumlah besar (Jarot, 2008). Daerah penelitian mempunyai sebaran bahan galian serpentinit sekitar 157.100 m 2 dan jumlah tonase sumberdaya serpentinit tereka 136.151.807,3 ton. Berdasarkan hasil analisis kimia serpentinit mengandung unsur magnesium yakni 20 -50%. Dari hasil analisa laboratorium pada batuan serpentinit ini layak untuk dimanfaatkan sebagai bahan baku pupuk mineral yang mutu dan memenuhi Standar Industri Indonesia . ABSTRACTSerpentinite rock is one of the sources of this magnesite mineral, is known to have a large element of magnesium (Mg), so that it can be used as a fairly beneficial fertilizer raw material, because magnesium (Mg) will be obtained in large quantities (Jarot, 2008). The research area has a spread of serpentinite minerals of around 157,100 m2 and an amount of tonnage of inferred serpentinite resources 136,151,807.3 tons. Based on the results of the chemical analysis laboratory, Agency of industrial research and development research and standardization of Industrial Halls of Banda Aceh Laboratory Examiners of industrial Baristand Banda Aceh (LABBA) years 2016 retrieved data Serpentinite Magnesium veins i.e. 20 -50%. The results of the laboratory analysis on the rock serpentinite shows the nature of worthiness to be utilized as a mineral fertilizer raw materials quality and Indonesia meet industry standards.