Quantitative Assessment of Podiform Chromite Deposits, Based on Three-Part Assessment Method in Naeen’s Ophiolites

Chromite is one of the most used strategic metals. Among different types of Chromite deposits, Padiform Chromite is more considerable economically. On other hand, decision-making for mineral exploration investigation requires accurate estimation of the quality and quantity of new deposits. For estimation of the quality and quantity of deposits, quantitative mineral resource assessments are required. Quantitative mineral resource assessment is based on descriptive, density, and average grade-tonnage models. In this research, a three-part assessment method has been used to estimate podiform chromite deposits in Naeen’s Ophiolites. The three-Part assessment method is based on an inverse relationship between the permissive area for a specific deposit type and the number of deposits. Evaluation by the three-part assessment method shows that the understudy region is high potential. Results show a 50% chance of at least 19 deposits with at least 69400 metric tons of chromite & 10% chance of at least 40 deposits with at least 46700 tons of chromite existing in the understudy region. Geochemical anomalies have been used for validation. These anolmalies have been separated based on the concentration-area (C-A) and singularity index methods. At least three geochemical anomalies in the east margin of Naeen ophiolite were identified.