공시 • Dec 02
Rokmaster Announces Significant Increase in Mineral Resources At the Revel Ridge Project
Rokmaster Resources Corp. announced the updated Mineral Resource Estimate ("MRE") for the Revel Ridge Project ("Revel Ridge"), located 35 km northeast of Revelstoke, B.C. Revel Ridge hosts a gold rich, polymetallic orogenic gold deposit, and is one of the large undeveloped deposits of this type in the Western Cordillera. The database on which the updated 2021 MRE is based includes data from 378 surface and underground drill holes totaling approximately 68,693 m of diamond drill core. The MRE also includes analytical results from 223 underground chip samples. Surface trench results have been used to constrain the Main Zone outcrop. Both drill hole and underground chip sample data have been composited over 1.0 m intervals. These data have been reviewed and validated, and the MRE estimated by P&E Mining Consultants Inc. The effective date of this MRE is November 15, 2021. A Technical Report will be filed on the Company's website and SEDAR within 45 days of this disclosure. Gold mineralization at Revel Ridge is associated with planar deformation zones which cut a previously isoclinally folded sequence of Cambrian to Late Proterozoic fine-grained clastic sedimentary and carbonate rocks forming the western margin of the Kootenay Arc. Much of the mineralization at Revel Ridge has strong affinities to a class of gold deposits known as orogenic gold deposits. This deposit type forms within dilatant intervals in laterally persistent brittle-ductile deformation zones. They may be mineralized over km scale vertical distances. At Revel Ridge, the Revel Ridge Main Zone ("RRMZ"), Revel Ridge Footwall Zone ("RRFZ"), Revel Ridge Hanging Wall Zone ("RRHZ") and Revel Ridge Main Zone Extension ("RRMEX") all have characteristics common to orogenic gold deposits. One of the mineralized domains, the Revel Ridge Yellowjacket Zone ("RRYZ") has differing metallurgical characteristics, different alteration styles and a unique mineralogy. The RRYZ has a signature more characteristic of a silver rich carbonate hosted replacement deposit ("CRD"). Revel Ridge Main Zone. The RRMZ is the single large Mineral Resource domain in the 2021 MRE. The RRMZ is characterized as a highly planar, 55-60degree, northeast dipping deformation zone, with an average width of mineralization of 2.5 m. The Measured and Indicated classification of the RRMZ contains 1.05 million AuEq ounces in 4.70 million tonnes grading 6.94 g/t AuEq. The Inferred classification contains 1.13 million AuEq ounces in 5.40 million tonnes grading 6.52 g/t AuEq. Rokmaster's expanded surface and subsurface drill program has significantly expanded the RRMZ at depth. Revel Ridge Footwall Zone. The RRFZ is the second large Mineral Resource domain within the 2021 MRE. The zone sub-parallels the RRMZ but is commonly located between 10 – 30 m into the footwall of the RRMZ. The RRFZ exhibits the same high strain characteristics and similar alteration styles to the RRMZ. The RRFZ may be unique, as the identification of visible gold is more common in this zone, particularly at deeper intervals of the RRFZ. Within the RRFZ, visible gold has been identified within sheeted quartz-ankerite veinlets that may be associated with red-brown sphalerite, galena and locally arsenopyrite. In the Measured and Indicated classification, the RRFZ contains 92 thousand AuEq ounces grading 5.22 g/t AuEq in 550 thousand tonnes. In the Inferred classification, the RRFZ contains 58 thousand AuEq ounces grading 4.69 g/t AuEq in 382 thousand tonnes. Revel Ridge Hanging Wall Zone. The RRHZ is best developed in the northcentral portions of the deposit area. The RRHZ is a mineralized deformation zone that occurs sub-parallel, and a few metres to a few tens of metres into the hanging wall of the RRMZ. It has similar macroscale characteristics i.e., the development of strain related fine-grained sericite, mm- to cm-scale quartz shear bands and sheeted shear foliation parallel high sulphide veins and veinlets. In the Measured and Indicated classification, the RRHZ contains 79 thousand AuEq ounces grading 4.35 g/t AuEq in 565 thousand tonnes, and in the Inferred classification, it contains 4 thousand AuEq ounces grading 4.49 g/t AuEq in 30 thousand tonnes. Revel Ridge Yellowjacket Zone. Of the five mineralized domains which make up the 2021 MRE, the RRYZ differs significantly from all other mineralized domains. The RRYZ is a high silver, zinc – lead carbonate replacement deposit hosted within silicified and replaced limestone units and occurs 50 m to 75 m into the hanging wall of the RRMZ. The RRYZ is best developed near the north-central deposit area. The down-dip extent of mineralization within the RRYZ is currently interpreted to be less than the down-dip extent of mineralization in the RRMZ. The reduced down-dip extension of mineralization in the RRYZ is a function of the role of anticlinal fold hinges in the development of this zone. RRYZ thickens near the anticlinal crests of deformed carbonate rocks and decreases along the limb position of these same rock units. The Measured and Indicated classification of the RRYZ contains 137 thousand AuEq ounces in 915 thousand tonnes grading 4.64 g/t AuEq, 59 g/t Ag, 2.38% Pb, 7.47% Zn and 0.44 g/t Au. In the Inferred classification, it contains 23 thousand AuEq ounces in 125 thousand tonnes grading 5.70 g/t AuEq, 61 g/t Ag, 2.30 % Pb, 4.59% Zn and 2.57 g/t Au. Revel Ridge Main Zone Extension). The RRMEX is the northwestern strike continuation of RRMZ and applies to any intersection northwest of DDH RR21-54. The zone is known to extend for at least 1,800 m northwest of the 830 m portal. In the Inferred classification, RRMEX contains 5 thousand ounces AuEq in 64 thousand tonnes grading 2.36 g/t AuEq. The modest size and grade of the initial RRMEX Mineral Resource is a function of two relevant parameters: The 2021 surface drill program has indicated that northwest of DDH RR21-54, mineralization within the RRMEX is gold dominant with base metals and silver effectively dropping out of the system. This gold-dominance also corresponds with rising topography. An increase in the elevation at the drill collar suggests that elevation controls may have influenced the distribution of base and precious metals. The relationship may be exemplified by DDH RR21-65 and RR21-66, which are 1,800 m to the west of the 830 m portal, and intersect the mineralized deformation zone at approximately 1,300 m elevation, or 470 m above the 830 m portal elevation. The absence of base metals and silver in the RRMEX, decreases the continuity of mineralization. Results from better-mineralized drillholes, (e.g., RR21-58, 0.9 m of 3.81 g/t AuEq), are excluded from the 2021 MRE, as they appear to be widely isolated intersections that cannot be modeled under the parameters used for inclusion in the Inferred Mineral Resources. The deformation zone in which the RRMEX exists, is clearly gold mineralized, but those intersections do not contribute to the 2021 MRE.