Geologically, Central Bangka Regency has Placer Deposits very widespread. The purpose of this research is to identify geological conditions and analyze the distribution of tin (Sn) content in Placer Deposits. Determination of tin content of Placer Deposits using the method of Grain Counting Analysis (GCA) and XRF (X-Ray Fluorescence) analysis on tin concentrate to determine the levels of Sn in …