- Unexplored high-grade vein system
- Past producing silver mine (~1900-1910); hosts numerous classic epithermal high-grade veins measuring 10+ kilometers of strike over widths of 6+ meters;
- Historic* mine records indicate grades of 600 to 900 gpt silver, including:
- 1900 gpt silver over 4 meters
- 679 gpt silver along 133 meters of vein strike and 1.3 meters of vein width
- 618 gpt silver along 218 meters of vein strike and 0.9 meters of vein width
- Underground workings include 4 shafts and 6 levels of drifts measuring over 1,000 meters in length (70k to 100k tonne estimated production)
- Mapping and Sampling underway in preparation for drilling in early 2019;
- Kootenay surface samples highlights:
- 330 gpt Ag over 2 meters chip
- 692 gpt Ag over 0.8 meters chip
- 360 gpt Ag over 1.8 meters chip
- 426 gpt Ag over 0.7 meters chip
- 275 gpt Ag over 3.5 meters chip
- 182 gpt Ag over 6.6 meters chip
- No evidence of any exploration in modern times
- Detailed results of the first 28 drill holes can be seen in the table listed on the following link: COLUMBA_DRILL_RESULTS
Click on Video below to view historic underground mining data. Results show grades increase with depth, a pattern common in epithermal vein deposits.
The following two diagrams illustrate zonation: GRADES INCREASE AT DEPTH
Columba is a past producing high-grade silver mine, which operated from 1900 until 1910, when work ceased in the region due to the Mexican Revolution. The Property covers a large, high-grade silver epithermal system comprised of numerous veins, which the Company has mapped over strike lengths from 200 meters to up to 2 kilometers.Recent channel sampling on these veins has returned widths of 0.5 to 6 meters and carried grades of up to 692 gpt silver.The Property has never been systematically explored in modern times. Kootenay can acquire a 100% ownership in the concessions by making staged payments over a 4-year period totaling US$3,290,000.Payments are weighted to the back-end of the agreement with an initial payment of US$15,000 and first and second years payments totaling US$75,000 and US$150,000 respectively. Upon earn-in the vendors retain a 2% NSR of which 1% can be purchased by the Company for US$750,000.
BACKGROUND & HISTORICAL DATA
Columba hosts a series of high-grade silver veins on surface as well as extensive underground workings. On surface four (4) old shafts are reported to extend to depths of up to 200 meters and connect to at least six (6) levels of widespread underground drifts covering lengths of up to 1,000 meters. The majority of the work appears to have been done in the early 1900’s and again in the mid 1900’s with an estimated 70,000 to 100,000 tonnes being mined. Historical reports obtained by Kootenay indicate the potential for the discovery of high-grade deposits. For example, historic data from underground workings at a depth of 100 meters include nine (9) individual channel samples taken along a 25-meter length of vein where several high-grade intervals were reported to return silver values from 350 gpt over 1.2 meters to a high of 1,900 gpt over 4 meters (see table below for sample details).
Historic Sampling of Vein at 100-meter Depth
The historic data is from plan maps of sampling across the veins in underground workings and from smelter reports reporting on tonnes and grade of material delivered which are consistent with the historic plan maps. Assays taken by the Company of surface tailings are also consistent with historic numbers.
The Company cautions that a qualified person has not done sufficient work to verify the historical sampling data and has not substantiated any data as it pertains to the Property; therefore, the reader should not rely upon such historical grades. The information is not necessarily indicative of mineralization on the Property and is provided as background and context material for the reader. The Company is treating the historical sampling data as a guideline to determining potential future exploration programs.
EXPLORATION WORK COMPLETED AT THE COLUMBA
To date, results of mapping and sampling completed by Kootenay have resulted in the confirmation of anomalous silver in numerous veins at surface mapped over strike lengths from 200 meters to 2 kilometers. Initial channel sampling by Kootenay has grades ranging from 1 gpt to a high of 692 gpt silver over widths of 0.5 to 6 meters. Sampling and mapping of known veins has been completed. Prospecting for new veins and additional sampling and mapping continues in preparation for drill testing.
The first holes completed during the the first phase drill program have targeted the F vein, which was briefly mined during the 1910 era and again in the late 1950’s to early 1960’s. Drilling is being carried out by Kootenay to verify vein widths, grades and location. Results thus far have confirmed good widths of quartz, quartz-calcite vein, vein breccia and stockwork in 17 of 18 holes with some holes hitting unexpected hanging wall veining. Detailed results of the first 28 drill holes can be seen in the table listed on the following link: COLUMBA_DRILL_RESULTS
Kootenay is currently carrying out a 30 to 40 hole drill program that includes an ongoing mapping and surface sampling to prioritize further drill targets. Details from subsequent work completed will be reported once the Company receives and compiles the results from the programs.