Logging stratigraphy on a drill rig to decide to continue or end the hole is a skill that every geologist should have. Ideally logging happens at the rig in realtime as we are often wanting to determine end of hole critera. Let’s consider how well hyperspectral and image data perform in classifing samples into prospective and non-prospective units. As usual we are going to use this dataset from from the C3DMM project.

Let’s talk about the performance of using chips vs hyperspectral to classify ore and waste in an Iron ore deposit. Before we go onto the technical work let’s discuss the practical uses of this information. Common use cases would be deciding if a sample is ore/waste, screening samples for further analysis or simply selecting the right sensor for you application and trading off cost/speed/performance/technical difficulty considerations. So with all that in mind I hope that you will find a smart application in your workplace.

Good Afternoon Spectroscopists, I though someone might be interested in using pytsg to process hyperspectral data. For this example we are going to use this dataset provided by CSIRO under a CC4 licence collected for the C3DMM project In this post we will use of PLS to predict Fe grade from the spectra. Let us start by installing the libraries that we are going to need. You can use the tsg file reader that I developed here or you can write your own…

Hi All, Here is the first in a series of posts covering a bit of ground on cavity detection. From estimating the proportion of cavities in exploration drill holes to their chance of detection with MWD on a blast pattern. First off we define a cavity, for the sake of an exploration drill hole a simple definition might be a caliper measurement that flatlines at the maximum value. Looking over the histogram we can see a few points of interest:

Hi All, Let’s touch on one of the many subtle issues around wireline logging and gamma logging in particular and it’s flow on effects. I have seen a few arguments on where to place the stratigraphic contact on a gamma log: above the peak, on the peak, below the peak, this then rapidly escalates to we need to get all the surfaces to snap to interpretations exactly! A solution for the problem might be as simple as “within the assay interval”.

Hi Everyone, A post has been doing the rounds from an exploration manager looking for a fieldy and geologist and was having trouble finding anyone. Considering the current environment this is likely to be an ongoing issue. I would love for a technical solution to this problem so lets run though a small set of considerations around commercial of the shelf sensing on a exploration drill rig. Imagery Ensure that the light output is stable in both intensity and colour balance, LEDs are a good choice here for practical reasons if you are willing to suffer higher maintenance costs and calibration issues quartz halogen bulbs are preferred.

Hi All, I would like to start my posting journey by talking about an issue that is near and dear to my heart: reading data. In Australia lucky geologists and data enthusiasts have access to a fantastic source of open file geoscientific data provided by our geological services such as GSWA and as tenements are released the data from then slowly becomes available as open file data under the fantastic CC4.