Rock Value Calculator App

Step 1: Press "Zero Out all Ore Grades" button.

Step 2: Metal Price: is in US dollars for the metals of interest.  You don't need to zero out the metal prices if you have no ore grade for that metal. Adjust prices as needed. 

Ore Grade: represents the head grades for the metals of interest in the units as shown (g/t and %).  Assign the grade to the correct grade unit row. 

Process Recovery: represents the average percent process recovery for each of the metals.

Payable Factor: represents the net payable percentage after various treatment, smelting, refining, penalty charges. This is simply an estimate depending on the specific products produced at site. For example, concentrates would have an overall lower payable factor (~85%) than say gold-silver dore production (~95%).

Insitu Rock Value: this output is the dollar value of the insitu rock (in US dollars), without any recovery or payable factors being applied.  It is the best case scenario. 

NSR Rock Value: this output represents the Net Smelter Return dollar value after applying the recovery and payable factors.  This represents the actual revenue that would be received.

You can save your inputs for future reference.  They will be saved as a "json" file in your "Downloads" folder, after which the file can be moved & saved elsewhere.