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Dusan Turajlic
Dusan Turajlic

Gemcom Surpac 6 4 1 Tutorial

Gemcom Surpac 6.4.1 Tutorial

Gemcom Surpac is one of the most widely used software in the mining industry, which allows mining engineers and geologists to perform various tasks in different stages of the mine life cycle. With this powerful mining package, geologists can create geological databases and model ore bodies using explicit modelling method, which is the focus of this tutorial.


What is explicit modelling?

Explicit modelling is a method of creating a solid representation of an ore body by defining its boundaries using drill hole data, surface mapping, and other geological information. The ore body solid can be used later to constrain a block model and perform resource estimation. Explicit modelling is different from implicit modelling, which uses mathematical functions to interpolate the ore body shape from sparse data points.

How to create a geological database in Surpac?

A geological database is a collection of data tables that store information about drill holes, assays, lithology, surveys, and other geological attributes. To create a geological database in Surpac, you need to follow these steps:

  • Open Surpac and create a new project or open an existing one.

  • Select File > New > Database from the menu bar.

  • Enter a name for the database and select a folder to save it.

  • Select the type of database you want to create (e.g., drill hole, surface mapping, etc.).

  • Define the fields and attributes for each table in the database (e.g., hole ID, depth, grade, etc.).

  • Import data from external sources (e.g., Excel, CSV, etc.) or enter data manually using the Data Entry tool.

  • Save the database and close the Database Manager window.

You can watch a video tutorial on how to create a geological database in Surpac [here].

How to create an explicit model in Surpac?

To create an explicit model in Surpac, you need to follow these steps:

  • Open Surpac and load the geological database that contains the drill hole data.

  • Select Tools > Geological Modelling > Explicit Modelling from the menu bar.

  • Select the drill hole table and the fields that contain the lithology codes and intervals.

  • Select the lithology codes that represent the ore body and assign them a color and a name.

  • Select the method of creating the ore body solid (e.g., triangulation, wireframe, etc.).

  • Define the parameters for the selected method (e.g., tolerance, smoothing, etc.).

  • Click OK to generate the ore body solid and save it as a DTM file.

  • Display the ore body solid in 3D view and edit it if necessary using the Solid Editing tool.

You can enroll in a Udemy course on how to create an explicit model in Surpac [here].


In this tutorial, we learned how to create a geological database and an explicit model in Surpac 6.4.1. We also learned about the advantages and disadvantages of explicit modelling compared to implicit modelling. We hope that this tutorial was helpful and informative for you. If you have any questions or feedback, please leave them in the comments section below.


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