Abstarct: Nowdays, the Efforts to Identify Valuable Subsurface Structures and Mineral Resources have been extended. Geophysical methods are the tools that provide valuable information through measuring physical quantities on the surface or above ground level. Because the density of the mineral chromite has substantial differences with the host rocks, the gravimetric method can be used to explore these deposits. The main objectives in the interpretation of gravimetric data include determining the depth and range of anomalous masses. Estimating the horizontal depth of anomalous bodies plays a significant role in the optimal selection of exploratory wells location and on the other hand, reduces the cost of drilling and extraction. There are several methods for estimating the depth, and in this study, the normalized full gradient (NFG) method was used. Using Fourier series, this method overcomes the disadvantages of downward continuation filter for passing through the center of the anomalous body. To interpret gravimetric data, data modeling is one of the most successful methods of interpretation. This study deals with interpretation, estimating the depth and modeling gravimetric data. Because in the geophysical methods to evaluate the effectiveness of each method, they are first applied on artificial data, so the NFG method was applied on two series of artificial data and both direct and inverted data modeling took place. The main purpose of this research is to interpret and model data in chromite-forming zone of Cuba and in chromite-forming zone of Sabzevar. First, using polynomial functions, regional and local anomalies were separated and then, using the 2D normalized full gradient method, the gravity anomalies were interpreted. To determine the status of mineral masses, direct modeling using Winglixnk software and 2D inverted modeling using Modelvision Pro software was performed. The algorithm used for modeling in these software is baxsed on iterative methods; also, to examine the structures in 3D space, three-dimensional constrained inverted modeling using Lee - Oldenburg algorithm (Grav3D software) was performed. The results of modeling the Cuba zone are in good agreement with those of excavations in the anomalous zones. Moreover, the results obtained from modeling the gravimetric data in Sabzevar exploration zone are reasonably consistent with the geological information of the area.