6 articles
Choosing a cut-off grade isn't a spreadsheet exercise. It's a decision that depends on mining method, metal price, recovery, and how honest your geological model is. Here's how to think about it for Indonesian deposits.
A grade-tonnage curve looks simple — grade on one axis, tonnage on the other. But reading it correctly requires understanding what the curve assumes and what it hides.
Kurva grade-tonnage terlihat sederhana — grade di satu sumbu, tonase di sumbu lain. Tapi membacanya dengan benar butuh pemahaman apa yang diasumsikan dan apa yang disembunyikan kurva.
Memilih cut-off grade bukan latihan spreadsheet. Ini keputusan yang tergantung pada metode penambangan, harga logam, recovery, dan seberapa jujur model geologi Anda. Begini cara berpikirnya untuk deposit Indonesia.
When indicator kriging beats ordinary kriging, how to build probability maps from binary transforms, and threshold selection for Indonesian gold deposits.
Kapan indicator kriging mengalahkan ordinary kriging, bagaimana membangun peta probabilitas dari transformasi biner, dan pemilihan threshold untuk endapan emas Indonesia.
From Orebit — practical geology tools for working geologists
