Some stuff that is useful but geologyforinvestors is pretty good (just a shame so much of it is paywalled but thats fair - they have to earn a living!)
Quite a good overview with a lot of the terminology explained (Amscot Stockbroking):
https://www.amscot.com.au/Download/Download?file=Interpretation_of_Resource_Company_Announcements_-_Overview.pdf
This guys has a website as well that is pretty good (Micky Fulp aka The Mercenary geologist - free trial on website?):
http://www.goldgeologist.com/presentations/Resources%20and%20Reserves%20%20Toronto%20090926.pdf
RSC Mining and Mineral Exploration - post "best drill hits" of the week which is accessible through twitter and linkedin (also has a pretty good web site mostly Aust and NZ focus)
https://www.rscmme.com/
Dated examples but the concepts are the same:
Investing News:
https://investingnews.com/daily/resource-investing/exploration-drilling-results-deposits-tomagold-northquest-goldquest-seafield/
Resource World Magazine:
https://resourceworld.com/making-grade-understanding-exploration-results/