Crestview Exploration Inc. announced the results from the 2022 mapping campaign at the Rock Creek gold prospect in the Tuscarora Mountains of Elko County, Nevada. These results include the completion of the geology map and overlays, detailed descriptions of structures and mapped units, and alteration and mineralization observations and interpretations. The mapping project accomplished several key goals, including: A base map of surface features to guide drill targeting and better understand geophysical results, by Identifying and delineating the mineralized and unmineralized surface lithologies.

Modelling the strength and distribution of alteration features. An updated and more accurate model of veins and structures controlling surface mineralization The mapping project was completed at the 1:2,000 scale, producing five folios with three geological overlays (geology, alteration, and Fe oxides) that were used to generate the South, Central, West, North and North End interpretive folios. As a reminder to the reader, the Rock Creek property consists of 74 unpatented lode mining claims, but is in close proximity to (as near as currently possible) Crestview's Divide and Falcon properties which comprise an additional 186 claims, for a total of approximately 2,009 hectares or 4,965 acres between the three.

Small historical prospecting occurred at all three properties, and more extensive historic mining occurred at Falcon and Divide. At Rock Creek, there was also some historic drilling which confirmed anomalous precious metal values; however, none of these holes penetrated deeper than 500 ft (Unpublished report by Cruson and Limbach, 1985). The property is located within the Eocene Big Cottonwood Canyon caldera in the Tuscarora volcanic field, hosting low sulfidation epithermal quartz veins with precious metal mineralization.

The Big Cottonwood Canyon caldera complex consists of multiple episodes of rhyolitic ash-flow tuff and lava flows of andesitic to dacitic composition. The mapping at Rock Creek concurs with the geological views of Henry and Boden (1998) on the general evolution of the Big Cottonwood Canyon Caldera. On the accompanying maps, the ash-flow tuff of Big Cottonwood Canyon isbroken into an lower and upper unit (Tct1 and Tct2), which are separated by a thin andesitic lava flow (Ta).

The lower ash-flow tuff unit (Tct1) is the main host for quartz veins at the property. The unit is a weakly to moderately lithic, densely to moderately welded ash-flow tuff with abundant fiamme. In altered samples, plagioclase and biotite are generally removed resulting in pitted textures.

Lithic fragments are small (< 5 cms) angular pieces of Paleozoic quartzite/siltstone. Near the structures, its hydrothermally altered to quartz+sericte/illite in thin envelopes producing linear color anomalies (white to gray bleaching). Silicified and breccia ledges are found in several locations.

Overlying this unit is an unaltered to propylitic altered, dark to light greenish porphyritic plagioclase andesite lava flow (Ta). These andesites range from hornblende to plagioclase dominant, with low content in biotite (<1%). This rock unit hosts two prospects sampled during mapping.

In both localities, late comb veins and gray quartz stockworks veinlets abound. At the North end of the property, andesitic autobreccias, are somewhat common within the andesite lava flows. Outcropping in topographic highs in the central portion of the property, an upper ash-flow rhyolitic tuff unit with 5-7% coarse lithic fragments (Tct2) overlies the andesites.

This may be an indication of near-vent facies and a small nested caldera within the larger caldera. Sparse and small NE-trending quartz veins cut the Tct2 tuffs. Field observations suggest that the dacite lava flows (Td) along the southern and central borders of the Rock Creek property overlie the lithic-rich ash-flow tuffs of Tct1.

The dacite is medium-grained with clear plagioclase phenocrysts (15%), scarce quartz (<1%), hornblende, and biotite (2%). The unit is weakly altered (propylitic) and oxidized, and the lava flows form smooth outcrops with typical reddish-purple colors in areas of low, rolling topography. The dacitic domes and flows (Td) are hypothesized to have been emplaced after the eruption of the Tct2 ash-flow tuffs and the collapse of the caldera.

In the southern portion of Rock Creek, a suspected dacitic lava dome underlays the Tct1 ash-flow tuffs. The last eruptive episode(s) is represented by a small eruption(s) of rhyolitic lava(s) from several plugs (Tr), which may have occurred between 35 and 33 Ma based on nearby radiometric dating (Ar-Ar; Henry and Boden, 1998). The rhyolite is light- tan/pinkish colored with a strong flow banding foliation.

The Tr unit is weakly altered to propylitic-c assemblage (Hudson, 2003). The oldest and deepest unit mapped at Rock Creek is the Paleozoic metasedimentary sequence (Pz), which is comprised of intensely fractured and folded quartzite/quartzarenite, metasiltstone, and chert. The Pz unit was mapped in small, structurally controlled outcrops in the southern portion of the property.

The Pz rocks feature abundant Fe-oxides along fractures and quartz veins with late quartz vein stockworks.