Discovery Samples Multiple High-Grade Mantos and Chimneys over 3 Levels at the Puerto Rico MINE, Puerto Rico Project
DISCOVERY SAMPLES MULTIPLE HIGH-GRADE MANTOS AND
CHIMNEYS OVER 3 LEVELS AT THE PUERTO RICO MINE, PUERTO
RICO PROJECT
Highlights
• Results were received from 206 new channel samples from the Puerto Rico Mine at
the Puerto Rico Project, completing the detailed underground channel sampling
program of the Puerto Rico, San Jose and Zaragoza Mines.
• A total of 13 separate manto horizons were identified in the three levels of workings,
of which nine were accessible for sampling. Significant results include:
Manto 7 average – 101 g/t Ag, 9.5% Pb, 20.0% Zn (29.4% ZnEq1), over 1.8m;
Manto 12 average – 116 g/t Ag, 6.1% Pb, 22.5% Zn (29.5% ZnEq1), over 1.4m;
Manto 8 average – 253 g/t Ag, 10.8% Pb, 11.7% Zn (24.8% ZnEq1), over 1.1m.
• 17 near -vertical mineralized faults and fractures (chimneys) were identified. These
chimneys are interpreted to be feeder structures for the manto mineralization.
Significant results include:
Chimney NW1 average – 279 g/t Ag, 27% Pb, 26.5% Zn (53.1% ZnEq1), over 0.8m;
Chimney NE10 average – 484 g/t Ag, 22.7% Pb, 22.1% Zn (48.8% ZnEq1) over 0.6m;
Chimney NE11 average – 701 g/t Ag, 43.5% Pb, 5.9% Zn (53.1% ZnEq1), over 0.5m.
September 27, 2018 - Discovery Metals Corp. (TSX-V: DSV) (“Discovery” or the “Company”)
is pleased to announce results from its detailed underground channel sampling program at the
Puerto Rico Mine (“PRM”), one of three historic mines comprising its flagship Puerto Rico
project (“Puerto Rico” or “the Project”) in northern Coahuila State, Mexico.
Taj Singh, P.Eng, President and CEO, states, “Puerto Rico is advancing quickly and
systematically, with all three historic mines now completely mapped and sampled. These
current results prove that robust, high- grade mineralization remains in all three historic mines.
The distribution of mineralization in all of the historic m ines, combined with the structural
characteristics identified in our mapping and modeling work, demonstrate the continuity and
significant potential of mineralization at the Project. We have gained i nvaluable insight into the
overall system which wil l aid us in vectoring towards more mineralization and possibly the
source. The results of the upcoming airborne mag and EM survey, scheduled for October, will
provide the final inputs required for the placement of drill holes for the Project’s maiden dril l
program. The drill permitting process at Puerto Rico is almost complete and we estimate the
receipt of permits within the next one to two months.”
NEWS RELEASE
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Results & Discussion
The PRM hosts approximately 650m of underground drifts and stopes over three levels that
span a vertical extent of 60m and cover a horizontal extent of approximately 200m (strike) by
30m (width) in a northwest erly direction. The underground workings (from bottom to top :
Haulage, Stairs, and Upper L evels) are host to strongly mineralized Ag-Pb-Zn mantos and
chimneys. Several mantos are well exposed in the underground workings , where they follow
bedding in flat -lying to gently folded strata, and locally step across limestone beds. The
mineralized vertical faults and fracture zones and are considered chimneys and extend between
mine levels.
A total of 206 channel samples were collected at approximately 5m intervals along both sides of
the entire length of the developed workings (across mineralization and wallrock) . Sampling
methodology is outlined in detail in the Technical Notes section of this news release. Sampling
locations and thicknesses were somewhat constrained by the extent of historic workings.
The table below summarizes the significant results by level and mineralization type:
PRM Level &
Mineralization Type
# of channel
samples
Average
thickness (m)
Average grades (thickness-weighted)
Ag g/t Pb% Zn% ZnEq%1 AgEq%1
Upper Level
Manto 10 5 0.8 18 1.1 19.3 20.5 1,169
Manto 11 4 1.6 29 1.2 23.8 25.3 1,442
Manto 12 5 1.4 116 6.1 22.5 29.5 1,680
NE1 Chimney 1 1.0 61 3.7 22.1 26.1 1,491
NE2 Chimney 4 1.4 60 7.7 27.6 34.8 1,985
NE5 Chimney 3 2.1 57 5.1 24.7 29.8 1,698
NE10 Chimney 2 0.6 484 22.7 22.1 48.8 2,783
NE11 Chimney 1 0.5 701 43.5 5.9 53.1 3,027
Wallrock 9 1.5 65 3.6 18.1 22.1 1,263
Stairs Level
Manto 7 25 1.8 101 9.5 20.0 29.4 1,676
Manto 8 5 1.1 253 10.8 11.7 24.8 1,415
Manto 9 5 2.1 39 3.5 10.8 14.3 815
NW1 Chimney 2 0.8 279 27.0 26.5 53.1 3,026
NW2 Chimney 1 0.4 123 9.2 17.6 27.2 1,549
NW3 Chimney 2 2.2 8 1.0 13.4 14.3 817
NE17 Chimney 1 0.9 2 0.6 36.5 37.0 2,112
Wallrock 44 1.2 53 3.1 4.9 8.3 474
Haulage Level
Manto 1 5 1.5 32 1.0 6.4 7.8 442
Manto 2 10 1.7 12 0.3 1.6 2.0 117
Manto 3 14 1.3 95 2.1 11.8 15.2 865
Wallrock 56 1.4 8 0.2 0.8 1.1 63
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Host Structure Descriptions:
Northeast-Striking Chimneys:
In the Upper Level and the northwest portion of the Stairs Level, five major chimneys were
mapped and sampled, striking 250 to 260 degrees, dipping 65 to 80 degrees to the north -
northwest, and with thicknesses ranging from 0.5 to 2.1m. The chimneys are host to abundant
galena and hemimorphite, returning average grades of 26.1 to 53.1% ZnEq. These chimneys
are interpreted to be mineralizing feeders to the mantos that occur on the same levels. On the
Haulage Level, narrow , vertical veinlets of galena were noted in the limestone, but access did
not permit sampling. On the central part of the Stairs Level, the chimneys are spaced
approximately 5m apart, and in the centre of the Upper Level they are 2m apart. The chimneys
in the Upper Level project to those on the Stairs Level below and are likely the same features.
Northwest-Striking Chimneys:
Mapping on the Stairs Level has identified three chimneys that strike 115 degrees azimuth and
dip 80 degrees to the southwest. The average thickness of these chimneys ranges from 0.4 to
2.2m, with average grades of 14.3 to 37.0% ZnEq. The parallel NW1 and NW2 structures are
host to abundant galena, and the zinc oxides hemimorphite and smithsonite. The subparallel
NW3 structure is host to dominantly smithsonite and relatively less galena, suggesting a
supergene origin of this mineralizat ion. The NW1 and NW2 structures are axial planar to an
anticline and are also interpreted to be feeder zones to the adjacent mantos mapped on the
Stairs Level.
Haulage Level Mantos (lowest elevation):
Three mantos (Manto 1-3) have been mapped on this level approximately 8m apart vertically.
These mantos are parallel to bedding within a synclinal drag fold and strike generally 310 to 320
degrees azimuth and dip 10 to 30 degrees to the northeast. Manto 1 and Manto 2 average
thicknesses are 1.5m and 1.7m thick respectively, while the Manto 3 average thickness is 1.3m
and can be traced for 60m laterally. Mineralization consists of dominantly hemimorphite and
smithsonite, with lesser galena. Average grades for Mantos 1-3 range from 7.8 to 15.2% ZnEq.
In the raise between the Haulage Level and Stairs Level, Mantos 4 and 5 can be observed but
access does not permit any detailed observations or sampling.
Stairs Level Mantos:
Four mantos have been mapped (Manto 6 through Manto 9) that generally strike 345 degrees
azimuth and dip 25 degrees to the northeast. These mantos are similar to those on the Haulage
level and are also located within a syn clinal drag fold. Mantos 7 and 8 average mineralized
thicknesses are 1.8m and 1.1m respectively and are exposed for 80m along strike and Manto 7
is traceable down dip along a cross cut for 20m. Manto 9 average mineralized thickness was
2.1m and is only exposed over 2m in a small embayment of the underground workings . The
average grades of Mantos 7-9 range from 14.3% to 29.4% ZnEq. Manto 6 is located in the back
of the Stairs Level workings and has been mapped as a 0.5m thick horizon but is not accessible
for detailed observations or sampling. All the mantos contain abundant hemimorphite,
smithsonite and lesser galena, with moderate amounts of manganese oxide.
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Upper Level Mantos:
Four mantos (Manto 10 to Manto 13) have been identified on the Upper Level that strike 320
degrees azimuth and vary in dip from 50 degrees to 68 degrees to the northeast. The steeper -
dipping mantos are on the steep limb of the drag fold mapped on this level. Manto average
thicknesses vary from 0.8m to 1.6m and mineralization is similar to that on the other two levels
with abundant hemimorphite and smithsonite and lesser galena. Manto 10 can be mapped
continuously for 30m in the stopes, Manto 11 and 12 for just over 70m, and Manto 13 over 80m
along the workings. The average grades of the sampled mantos on this level ranges from 20.5
to 29.5% ZnEq.
A full table of results and maps related to this news release can be found at:
https://dsvmetals.com/site/assets/files/PRM-Sept2018-FINAL_APPENDIX.pdf
TECHNICAL NOTES
Sample analysis and QA/QC Program: The rock chip and channel samples were taken
perpendicular to mineralization, with variable length (across width of mineralization, typically
0.5m-2.5m) and a minimum channel thickness of 60mm and minimum channel de pth of
30mm. The entire volume of each chip or channel sample was transported from site by ALS and
prepared at the ALS lab facilities in Zacatecas and Chihuahua facilities, with splits of pulps
shipped to the ALS lab in Vancouver for analysis. Samples were analyzed for gold using (1) a
standard fire assay with a 30-gram pulp and Atomic Absorption (AA) finish for gold; and (2)
Thirty-element inductively coupled plasma atomic emission spectrometry (“ICP-AES”). Over
limit sample values were re-assayed for: (1) values of zinc > 10%; (2) values of lead > 10%;
and (3) values of silver > 100 g/t. Samples were re-assayed using the ME-OG62 (high-
grade material ICP-AES) analytical package. For values of zinc or lead greater than 30%, a
third re-assay using the Zn-VOL50 or Pb-VOL50 (potentiometric titration) analytical method
was used while values of silver greater than 1,500 g/t, were re-assayed using the Ag-CON01
analytical method, a standard fire assay with 30g pulp and gravimetric finish. Certified
standards and blanks were routinely inserted into all sample shipments to ensure integrity of
the assay process.
Qualified Person: Gernot Wober, P.Geo, Vice- President of Exploration of Discovery Metals
Corp., is the Company's designated Qualified Person for this news release within the meaning
of National Instrument 43 -101 Standards of Disclosure for Mineral Projects (“NI 43 -101”) and
has reviewed and validated that the information contained in this news release is accurate.
REFERENCES
1All numbers in this news release are rounded and assays are uncut and undilute. ZnEq and
AgEq calculations are based on USD $15/oz Ag, $1.25/lb Zn, $1.00/lb Pb, $3.00/lb Cu and do
not consider metallurgical recovery.
2For a full table of results, maps and graphics related to this news release, please refer to:
https://dsvmetals.com/site/assets/files/PRM-Sept2018-FINAL_APPENDIX.pdf
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ABOUT DISCOVERY METALS
Discovery Metals is focused on discovering and advancing high grade polymetallic deposits in a
recently assembled land package of approximately 300,000 hectares over a large and historic
mining district in northern Coahuila State, Mexico. The portfolio of seven key properties, all with
shallow high -grade silver -zinc-lead mineralization, is situated in a world class CRD belt that
stretches from southeast Arizona to central Mexico. The land holdings contain numerous
historical direct -ship ore workings with approximately 4k m of underground development. No
modern exploration or exploration drill testing has been carried out on the properties prior to
Discovery’s time on the projects.
On Behalf of the Board of Directors
“Taj Singh”
Taj Singh, M.Eng, P.Eng, CPA
President, Chief Executive Officer, and Director
For further information contact:
Discovery Metals Corp.
#701 - 55 University Ave
Toronto, ON Canada M5J 2H7
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of this release.
Cautionary Note Regarding Forward-Looking Statements
This news release may include forward-looking statements that are subject to inherent risks and uncertainties. All statements within
this news release, other than statements of historical fact, are to be considered forward looking. Although the Company believes the
expectations expressed in such forward -looking statements are based on reasonable assumptions, such statements are not
guarantees of future performance and actual results or developments may differ materially from those described in forward- looking
statements. Factors that could cause actual results to differ materially from those described in forward- looking statements include
fluctuations in market prices, including metal prices, continued availability of capital and financing, delays in receip t of required
permits, and general economic, market or business conditions. There can be no assurances that such statements will prove
accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties. We do not assume any obligation
to update any forward-looking statements except as required under applicable laws.
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