| Company | Centerra |
| Date | 2020-12-02 |
| Region | Carlin Trend, Nevada |
| Commodities | Gold |
| Status | Exploration |
Executive Summary
The REN Property is located within the Carlin Trend, a region known for refractory gold deposits. The gold mineralization is hosted in carbonaceous material and sulphides, which prevents direct cyanide leaching due to preg-robbing. Recovery requires oxidation of the ore prior to leaching.
Preliminary testing conducted in 2000 confirmed the severe preg-robbing nature of the REN material. Direct cyanidation leach testing on high-grade core samples showed minimal gold recovery even after 96 hours. The addition of activated carbon provided only slight improvement, confirming the refractory nature of the mineralization.
Petrographical studies indicate the presence of sub-microscopic gold in solid-solution within pyrite and marcasite, alongside significant carbonaceous material. Centerra plans further metallurgical test work to determine the optimal flow sheet, likely involving pressure oxidation in autoclaves or whole-ore roasting, similar to other operations in the Carlin Trend.
Website: https://www.guelphmercury.com/news/rye-patch-to-buy-nevada-property-from-centerra-gold-for-us-42-million/article_5b29a85b-0d8d-594e-8620-f9e5d62bcaa7.html
Report Date: 2020-12-02
Region: Carlin Trend, Nevada
Project Status: Exploration
Commodity: Gold
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