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This report has been written based on research aimed to know electrical characterize, structure, and morphology of ceramic nanocomposites. Materials are used to consist of Indonesia local minerals are jarosite and manganite minerals as sources oxide iron, mangan, and oxide zinc is from commercial. The third materials were mixed by using precipitation method whereas the ceramic nanocomposite was fabricated by using a screen printing method and fired at 600 °C temperature with a furnace. Sample structure and morphology had been examined by using XRD and SEM respectively. The result of the characterization indicated that a sample was fabricated measured nanometer scale with three phases on diffraction peaks and had hexagonal-spinel structures. The sample also had high porosity. The electrical charracteristic of the sample was examined with an electrical tester had to function R-T in ambient and alcohol environments. Resistance value had been known in ambient and alcohol environments were different. The difference in resistance value indicated that a sample had a very different response in both of the environments. Nanometre size and high porosity of the sample were very supported to be processed gas adsorption. So, a sample had a high level of response. Therefore, nanocomposite ceramic had been fabricated potentially for application in the sensor field, especially as an alcohol gas sensor.