Comstock Inc (LODE)

[BottomBounce]

Comstock Mining Inc. $LODE Dayton - Spring Valley Group Targets

Spring Valley is located south of the Dayton resource area and south and east of State Route 341. Ground magnetic geophysical surveys identified a linear anomalous corridor, defined by a series of relative magnetic lows. Altered volcanic host rocks have been intercepted by limited drilling and identified several mineralized zones, the global Dayton resource foot print is outlined with reference to the technical report authored by Behre Dolbear in January 2013. The exploration of Spring Valley will include phased drilling programs that will continue southerly from SR341 to the historic Daney mine site (Figure 5), with a
potential strike length of approximately 9,600 feet.

The technical staff reviewed historic geologic and geophysical studies and prior drill programs that focused upon the Dayton resource area and extensions south into Spring Valley. The few drill holes that were completed in Spring Valley intercepted altered Miocene volcanic rock known to host the economic mineralization of the Dayton resource. Specific drill holes that encountered highly mineralized zones are highlighted on Figure 4. Collectively, several specific locations were selected and are targeted for future drilling. The Dayton resource area has open ended economic mineralization requiring additional drill holes to delineate the geometry for mine planning. South of the Dayton resource area the limited drilling
coupled with the geophysical interpretation indicates the targeted exploration model extends an additional 8,000 feet (length of geophysical magnetic survey) into Spring Valley.
Several historic mines operated in the Dayton resource area, leaving access to multiple structures from underground. Some historic adits have remained open or have been uncovered by the Company. The geologic and engineering team completed underground mapping, sampling, and surveying in a number of historic mine tunnels on and near the Dayton resource area. Where accessible, the workings were inspected; geology mapped and mineralized material sampled. Once sampling was completed, the workings were surveyed to document the size of the mine workings, the location of the openings
and location of the samples. The samples were then assayed at the Company’s in house metallurgical laboratory for gold and silver.

This underground sampling program has provided a wealth of assay information and provided critical information for furthering the geologic understanding of the Dayton resource area. In some cases structures identified on the surface were traced underground and in other cases new structures were identified underground where surface expressions were absent or obscured.

Combining the underground study with the prior conventional percussion, RC and diamond core drill programs and magnetic, IP and resistivity geophysical surveys (Figure 4), new targets have been generated based on the Company's latest review of previous studies and current interpretation of the geology. The Dayton and Spring Valley southern expansion of exploration programs includes offset and definition drilling of these targets.

Ground magnetic geophysical surveys identified a linear anomalous corridor, defined by a series of relative magnetic lows. Altered volcanic host rocks have been intercepted by limited drilling and identified several mineralized zones. Selected drill hole intercepts are highlighted (see Figure 4). The mid-level magnetic lows define a zone (up to 500 feet wide) beginning at the Dayton resource and continuing southerly approximately 8,000 feet (length of geophysical magnetic survey) towards the Daney patent. The zone is further defined by the trace of interpreted north/south trending vein swarms depicted on Figure 6. In the Dayton resource area the increased density of the vein swarms with intersecting cross structures has been indicative to host the higher grades and larger volumes of economic mineralization. This scenario is part of the exploration model and has generated a multiple drill target environment.

The Spring Valley exploration program is designed to target areas that have similar magnetic signatures of known economic grade mineralization. The magnetic geophysical survey was further studied and a structural interpretation was developed that illustrated multiple cross cutting structures (colored green) that are oblique to the southerly projected north/south vein trend (colored red), refer to Figure 6. Though rare due to alluvial cover, the outcropping quartz veins and outcropping crosscutting structures had definitive diagnostic magnetic signatures. The interpretation of the structures and veins were derived by connecting these specific magnetic attributes as identified on each 25-meter spaced survey line. Similar
structures have been identified in the Dayton resource area and were found to be important components for the development of economic grades of mineralization. Geologic mapping


https://comstockmining.com/investors/financial-snapshot