3D geologic model of FARIM-SALIQUINHE phosphates mineralization.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This work is the first attempt to generate an output with Gocad software by the recently created 3D Geologic Modeling research group of CICEGe research centre (from FCT/UNL, Portugal).
The objective of this work is to generate a 3D geologic model of the morphology and grades of the Farim-Saliquinhé sedimentary phosphate mineral deposit, located at Guiné-Bissau. The model uses borehole data and previous studies carried by BRGM and Sofremines, and the gOcad software as the main tool.
This is a good example to start using gOcad since it is an undeformed simple stratiform mineralized body with the following (sub)horizontal units to include in the 3D model: terrain surface, coverage unit, FPA phosphate unit (main ore) and FPB carbonate-phosphate unit (secondary ore).
The workflow can be summarized in the following sequence of steps:
1- Starting a Project in gOcad and Importing Data;
2- Visualizing the Objects and Preparing Data for Modeling;
3- Creating a Structural Model. Add Horizon Data; Build Horizon Surfaces;
4- Creating Volumes. Building a 3D mineral deposit grid;
5- Modeling ore geochemical properties by kriging estimation.
At the end, cumulative ore and grade curves are calculated showing mineral resources.
Original languageUnknown
Title of host publication-
Publication statusPublished - 1 Jan 2009
Event29th GOCAD Meeting -
Duration: 1 Jan 2009 → …


Conference29th GOCAD Meeting
Period1/01/09 → …

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