One-level prediction—A numerical method for estimating undiscovered metal endowment

Abstract

E s t i m a t i n g U n d i s c o v e r e d M e t a l E n d o w m e n t One-level prediction has been developed as a numerical method for estimating undiscovered metal endowment within large areas. The method is based on a presumed relationship between a numerical measure of geologic favorability and the spatial distribution of metal endowment. Metal endowment within an unexplored area for which the favorability measure is greater than a favorability threshold level is estimated to be proportional to the area of that unexplored portion. The constant of proportionality is the ratio of the discovered endowment found within a suitably chosen control region, which has been explored, to the area of that explored region. In addition to the estimate of undiscovered endowment, a measure of the error of the estimate is also calculated. One-level prediction has been used to estimate the undiscovered uranium endowment in the San Juan basin, New Mexico, U.S.A. A subroutine to perform the necessary calculations is included.

From Predictive Mapping of Mineral Prospectivity to Quantitative Estimation of Number of Undiscovered Prospects

“…Accordingly, a grade‐tonnage model for the type of mineral deposits that is most similar to those of the known HACD in the island is unsuitable for assessment of undiscovered HACD in the island. However, application of one‐level prediction for estimating undiscovered metal endowment (McCammon & Kork, 1992; McCammon et al ., 1994) is demonstrated here because, unlike the afore‐mentioned methods, it is based on a measure of favorability of mineral deposit occurrence.…”

“…Unlike in Scott and Dimitrakopoulos (2001) and Fallon et al . (2010), one‐level prediction (McCammon & Kork, 1992; McCammon et al ., 1994) and fractal analysis (cf. Raines, 2008; Zuo et al ., 2009b) were employed here for estimation of the number of undiscovered prospects.…”

An integrated data-directed numerical method for estimating the undiscovered mineral endowment in a region

“…The caI= ibration constant represents an average endowment'per cell to be assigned to any cell classified as favorable (en= dowed). A complete description of the method by onelevel prediction and the calculations involved has been published previously (McCammon and Kork, 1992).…”

A Combined Deterministic‐probabilistic Method of Estimating Undiscovered Hydrocarbon Resources

“…Sandvik and Zakharov, 1996), the mining industry (e.g. Allais, 1957;Drew, 1997;Harris, 1984;McCammon and Kork 1992;Singer and Menzie, 2010;Singer, 2013;Lisitsin, 2016) and various publications and presentations by oil companies (e.g. Baker et al, 1984;Biteau et al, 2010;Hood and Walker, 2012;Thomsen, 2012;Quirk et al, 2012;Quirk, 2017a), consultancy firms (e.g.…”