Enforcer Gold Corp. (TSXV:VEIN) (“Enforcer” or the “Company”) along with SOQUEM today announce the results of an amended and restated mineral resource estimate on the Mop-II gold-copper deposit at the Company’s Roger project. Enforcer is earning a 50% interest in the Roger project from project operator, SOQUEM.
Enforcer and SOQUEM were informed by Qualified Person, Christian D’Amours of GéoPointCom, that an error had been discovered within the drill hole database utilized in the mineral resource estimate reported on August 28, 2018. The error affected the data for several drill holes at the western ends of the North and Main zones and lead to a misestimating of the resource and induced an oversized conceptual pit shell. The effect and scale of the error on the resource could not be determined without a complete re-estimation; hence, Enforcer and SOQUEM requested GéoPointCom to immediately correct the database and recalculate the mineral resource.
The revised mineral resource estimate prepared by GéoPointCom using a 0.45 g/t gold equivalent (“AuEq”) cut off is 333,000 AuEq oz in the Indicated category and 202,000 AuEq oz in the Inferred category (Table 1). The impact of the amendment is a 12% decrease in the total Indicated resources and a 45% decrease in the total Inferred resources announced on August 28, 2018. Over 60% of the amended global resource is in the higher confidence Indicated category.
Enforcer Gold President and CEO, Steve Roebuck, comments:
“This is a very unfortunate situation but one that is not of Enforcer Gold’s making. The database error that lead to the amendment and restatement of the mineral resource is highly regrettable, but fortunately, the reduction to the Inferred resources is largely confined to the North Zone where drilling coverage is limited. There is little impact on the Mop-II Main Zone and the bulk of the Indicated resources. This restatement has no impact on Enforcer and SOQUEM’s commitment to advancing the Roger project and building the mineral resource on the Mop-II deposit. The Phase 2 drilling campaign is set to commence shortly and will focus on increasing and upgrading the current resource base.”
SOQUEM President, Olivier Grondin, comments:
“It is an unfortunate situation that is out of SOQUEM’s control, since the database that was transmitted by SOQUEM to GéoPointCom was in good standing. All parties involved are working together to identify the reason for the error. The matter is taken very seriously.”
Table 1. Pit-Constrained Mineral Resource Estimate on the Mop-II Gold-Copper Deposit
| Category | AuEq
Cut-off (g/t) |
Tonnes | AuEq
(g/t) |
Contained AuEq
(oz) |
Au
(g/t) |
Contained Au
(oz) |
| Indicated | 0.45 | 10,900,000 | 0.95 | 333, 000 | 0.85 | 297,000 |
| Inferred | 0.45 | 6,569,000 | 0.96 | 202, 000 | 0.75 | 159,000 |
| Notes to Table 1: | |
| 1. | The mineral resource estimate was prepared with reference to the 2014 Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Definition Standards and the 2003 CIM Best Practice Guidelines. |
| 2. | The effective date of the mineral resource estimate is July 4, 2018. |
| 3. | The Qualified Person for the estimate is Christian D’Amours, PGeo, of GéoPointCom. |
| 4. | Gold Equivalent (“AuEq”) cut-off grade is based on 3-year average metal prices (to July 2018) of US$1,240/oz gold, US$16.50/oz silver and US$3.00/lb copper, USD/CAD exchange rate of 1.3129 using an open pit constrained model. |
| 5. | The resource is supported by statistical analysis with good reproducibility of the values and geostatistical validation of the coefficient of variation and probability curves. High-grade values were not capped but their numbers and area of influence was limited. |
| 6. | A minimum thickness of 10m was used for all sub-vertical zones and assays were composited to 1.0m true width. |
| 7. | A bulk density of 2.70 g/cm3 was used for the current estimate. |
| 8. | Mineral resources are reported as in-situ without dilution and material loss. |
| 9. | Rounding may result in apparent differences between tonnes, grade and contained metal content. |
| 10. | Mineral resources that are not mineral reserves do not have demonstrated economic viability. |
Block model plans and sections are available in the Roger Map Gallery.
Table 2. Pit-Constrained Indicated Mineral Resource Sensitivity by Cut-Off Grades
| AuEq
Cut-Off (g/t) |
Tonnes
(kt) |
Au
(g/t) |
Ag
(g/t) |
Cu
(%) |
Au
(oz) |
Ag
(oz) |
Cu
(lb) |
AuEq
(oz) |
| 0.25 | 22,047 | 0.55 | 0.73 | 0.05 | 392,000 | 517,000 | 23,065,000 | 454,000 |
| 0.3 | 18,130 | 0.63 | 0.75 | 0.05 | 365,000 | 437,000 | 19,807,000 | 419,000 |
| 0.35 | 15,208 | 0.70 | 0.77 | 0.05 | 341,000 | 376,000 | 17,448,000 | 388,000 |
| 0.4 | 12,758 | 0.77 | 0.79 | 0.05 | 317,000 | 325,000 | 15,171,000 | 358,000 |
| 0.45 | 10,900 | 0.85 | 0.80 | 0.06 | 297,000 | 281,000 | 13,286,000 | 333,000 |
| 0.5 | 9,345 | 0.92 | 0.81 | 0.06 | 277,000 | 245,000 | 11,720,000 | 309,000 |
| 0.6 | 6,956 | 1.08 | 0.85 | 0.06 | 242,000 | 189,000 | 9,099,000 | 267,000 |
| 0.7 | 5,363 | 1.24 | 0.87 | 0.06 | 214,000 | 150,000 | 7,254,000 | 234,000 |
Table 3. Pit-Constrained Inferred Mineral Resource Sensitivity by Cut-Off Grades
| AuEq
Cut-Off (g/t) |
Tonnes
(kt) |
Au
(g/t) |
Ag
(g/t) |
Cu
(%) |
Au
(oz) |
Ag
(oz) |
Cu
(lb) |
AuEq
(oz) |
| 0.25 | 14,917 | 0.48 | 1.03 | 0.08 | 230,000 | 492,000 | 25,608,000 | 298,000 |
| 0.3 | 12,757 | 0.53 | 1.05 | 0.08 | 216,000 | 429,000 | 23,512,000 | 278,000 |
| 0.35 | 10,751 | 0.58 | 1.05 | 0.09 | 200,000 | 361,000 | 21,500,000 | 256,000 |
| 0.4 | 8,196 | 0.67 | 1.08 | 0.11 | 175,000 | 284,000 | 18,949,000 | 224,000 |
| 0.45 | 6,569 | 0.75 | 1.18 | 0.11 | 159,000 | 250,000 | 16,551,000 | 202,000 |
| 0.5 | 5,501 | 0.83 | 1.17 | 0.12 | 147,000 | 207,000 | 14,851,000 | 185,000 |
| 0.6 | 3,723 | 1.02 | 1.10 | 0.15 | 122,000 | 131,000 | 12,250,000 | 153,000 |
| 0.7 | 2,629 | 1.24 | 1.13 | 0.17 | 105,000 | 95,000 | 10,107,000 | 130,000 |
| Notes to Tables 2 and 3: | |
| 1. | Gold Equivalent (“AuEq”) cut-off grade is based on 3-year average metal prices (to July 2018) of US$1,240/oz gold, US$16.50/oz silver and US$3.00/lb copper, USD/CAD exchange rate of 1.3129 using an open pit constrained model. |
Gold mineralization at the Mop-II deposit correlates with broad alteration zones of sericitization and silicification that are largely contained within a 2.2 km long by 0.4 km wide quartz-feldspar porphyry intrusion. The mineralization is homogenous, generally low grade and occurs over broad intervals. In addition to the 58,000 m of diamond drilling now completed on the Roger property, underground exploration undertaken in 1988 included 1,177 m of development and over 1,000 m of chip sampling. In 2006, a NI 43-101 mineral resource estimate on the Mop-II deposit outlined 3.24 Mt of Inferred Resources at an average grade of 1.61 g/t Au and 0.04% Cu for a total 167,200 ounces of gold (Enforcer press release dated March 5, 2018). Enforcer considers the 2006 estimate as a historical resource estimate that has relevance to the project; however, a qualified person for the Company has not done sufficient work to classify the historical estimate as a current mineral resource.
The 2018 mineral resource estimate was prepared by GéoPointCom of Val-d’Or, Quebec utilizing GeoticMine software and geostatistical analysis by Isatis software. The estimate was calculated using ordinary kriging (OK) methodology and the block model was constructed using block dimensions of 10 x 10 x 10 meters. The estimate incorporates information from 260 surface diamond drill holes and 23 underground diamond drill holes for a total of 38,554 m of split/sawn and assayed core. The wireframes solids were created using a 3D Delaunay triangulation process instead of lines and tie lines projected on section. A total of 13 sub-vertical wire frames were constructed considering a minimum true thickness of 10 m and a minimum grade of 0.35 g/t …read more
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