State of Alaska Alaska | Natural Resources DNR | Geological & Geophysical Surveys DGGS | Alaska Minerals DB AMDB

Estelle, Brix claims

Property Details


Interpreted mineral system (using mineral system classification of Hofstra and Kreiner, 2020*)

Activity by Year


Year Activity Status Operator Project Name Description
2017 Exploration Exploration Project Nova Minerals Ltd. Exploration was conducted in 2017.
2018 Exploration Exploration Project Nova Minerals Ltd. In 2018 Nova Minerals conducted chip sampling and geologic mapping in the Oxide prospect area. Previously identified chargeability anomalies were also sampled. Seventy-five samples were submitted for ore-geochemistry analysis and, where appropriate, for major- and minor-oxide analysis to better understand the geochemical composition of the mineralized intrusive suite. Three bulk pan-concentrate samples were acquired from the main stream drainage cutting the claim group.
2019 Exploration Exploration Project Nova Minerals Ltd. Nova Minerals Ltd. continued exploration at the Estelle gold project in the western Alaska Range, approximately 110 miles northwest of Anchorage. The company focused efforts on the Oxide prospect, beginning the season with ground-based magnetometer, IP, and resistivity surveys, then following up with an 18-hole, 4,500-foot reverse-circulation drill program. Intercept highlights from drilling include 230 feet averaging 0.035 ounce of gold per ton (hole OX-RC-16), and 200 feet averaging 0.014 ounce of gold per ton (hole OX-RC-17). On the basis of this drilling and three core holes completed by its predecessors, Nova Minerals announced a maiden, JORC-compliant inferred resource for the Oxide-Korbel prospect of 2.5 million ounces of gold (200 million tons averaging 0.013 ounce of gold per ton using a 0.0053 ounce of gold per ton cutoff grade; appendix D). In late 2019, the company reported results of initial beneficiation studies indicating 76 percent recovery of gold by cyanide leaching over 12 hours.

Production Stats


Year Total Rock Mined (short tons) Waste Rock (short tons) Ore Mined (short tons) Ore Milled (short tons) Heap Leach Ore (short tons) Total Concentrate Produced (short tons) Pb Ore Grade % Pb Recovered (short tons) Zn Ore Grade % Zn Recovered (short tons) Au Head/Ore Grade (OPT) Au Recovered (troy ounces) Au Recovery % Ag Ore Grade (OPT) Ag Recovered (million troy ounces) Coal (short tons) Other Other Amount Other Units

Resources


Source Year Description Property Phase Category Resource (short tons) Cu % Cu (thousand pounds) Pb % Pb (thousand pounds) Zn % Zn (thousand pounds) Au (OPT) Au (thousand oz) Ag (OPT) Ag (thousand oz) Mo % Mo (thousand pounds) Co % Co (thousand pounds) Barite % Barite (thousand pounds) TREO % TREO (thousand pounds) Graphite % Graphite (thousand pounds)

* Hofstra, A.H., and Kreiner, D.C., 2020, Systems-Deposits-Commodities-Critical Minerals Table for the Earth Mapping Resources Initiative: U.S. Geological Survey Open-File Report 2020-1042, 24 p., https://doi.org/10.3133/ofr20201042