This paper introduces the technique of mineral resources information management and distribution. It is a Web-based Mineral Information System of Thailand using FOSS and OGC based web services and standards. It distributes the geospatial content on the web through the formulation of web services such as WMS and WPS, launched on a customized WebGIS portal. The web-based mineral information system plays a critical role in the national dissemination of mineral information. It also supports the activities of the WGMID of the ASOMM. The approaches of sharing mineral resources information, formulation of web services, and the setting up of a WebGIS portal for mineral information processing and dissemination are presented. The primary advantages of these approaches are its cost efficiency in the development and system maintenance, and the applicability of the server software and web-based system to other geosciences fields.