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TriStar Gold Inc.
Summary
| Project: | Castelo de Sonhos | |
|---|---|---|
| Deposit: | Castelo de Sonhos | |
| Location: | Brazil | |
| Commodities: | Gold | |
| Date: | 9/17/2018 | |
| Report Code: | NI43-101 | |
| Report Type: | Resource Estimation | |
| Project Stage: | Pursuing PEA | |
| Report details: | 17-9-2018: TriStar Gold Inc. announces a Resource Estimation report for its Castelo de Sonhos deposit at the Castelo de Sonhos project. Updated mineral resource estimate at the project. (Scottsdale, AZ), TriStar Gold Inc. (the “Company” or “TriStar”) has | |
| Resources: | (Resource): 8.9Mt @ 1.8g/t Au for 0.5Moz Au (Ind.), 26.2Mt @ 1.2g/t Au for 1.0Moz Au (Inf.) | |
| CP/QP: | [Resources]: Bernardo Horta de C Vianna (GE21 Consultoria Mineral) | |
| ABSTRACT: | (Scottsdale, AZ), TriStar Gold Inc. (the “Company” or “TriStar”) has completed an updated mineral resource estimate for the Castelo de Sonhos gold project using all available data, including assays from the 37 drill holes that were not available for the September 18, 2017 resource estimation. Key highlights are: “The resource is growing as anticipated and continues to validate the predictions of the exploration target range. We look forward to drilling in 2018 aimed at further expanding the resource and supplying all the data necessary for the scoping study” says Nick Appleyard, TriStar’s President and CEO, “CDS continues to deliver and the resource has grown by over 400% in the last 18 months, and now our confidence levels are growing as well. We are particularly pleased with the strong grade of the Indicated resources, at 1.8 g/t, which is due to our ability to use petrophysics and televiewer to identify marker horizons that establish continuity between our 50m drill holes.” The resource is constrained by a mineralized envelope that corresponds to the conglomeratic band of the paleo-placer, honouring its outcrop location and surface measurements of its bedding orientations, and extending into the upper arenite where drilling has confirmed that the base of the upper arenite contains remobilized gold. All drill hole assays were capped at 20 g/t. This resource update was done using inverse-distance-cubed (ID3 ) interpolation of grades from drill holes into 5x5x2m blocks. The search strategy, guided by variogram analysis, uses a flattened ellipse, with ranges of 100m in the bedding direction and 10m perpendicular to bedding. Heavy mineral bands in optical televiewer (OTV) images were used to establish local bedding orientations. Grade estimation was performed separately within each of three major stratigraphic units that comprise the conglomerate band, and within two more strongly mineralized reefs that occur at the boundaries between these units. Assay data, lithology logs and petrophysical signatures were used to identify marker horizons at the boundaries of these units. The reefs that occur at the boundaries between the three major units are 10-20m thick and appear to be very continuous. | |
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