English to French Tech/Engineering Mining & Minerals / Gems mining exploration results

The context is a technical description of mining exploration results.
It is a list so there are no real sentences.

In the Geotechnical/ structural section, they mention : Recovery and RQD data on X holes and minor point data on X holes.

Would anyone know what minor point data is?

I thank you in advance for any assistance,
Best regards,
Valerie