Mr. Robert Willis reports
SAN MARCO CONTINUES TO DISCOVER HIGH GRADE MINERALIZATION AT CHUNIBAS; SAMPLES 6.41% COPPER AND 27.3 G/T SILVER
San Marco Resources Inc. has released further assay results from continuing fieldwork at Chunibas. As disclosed in the company's news release dated Jan. 10, 2018, newly discovered copper and silver mineralization at the company's 100-per-cent-owned Chunibas property has been located over an area of approximately 1.2 kilometres of strike and at least 100 metres of width. That zone has now been extended to 1.7 kilometres of strike and up to 150 metres of width and is open in all directions.
Recent surface work included 38 rock-chip samples, of which 26 per cent assayed greater than 1 per cent copper and 50 per cent greater than 0.2per cent copper. Highlights of the recent 38 assay results are shown in the attached table.
Sample No. Cu Ag(%)(g/t) 366587 0.754.8366588 1.28 13.7366589 2.62 26.3366590 1.29 5.83366591 1.82 29.8366592 1.52 10.9366596 3.95 32.8366597 6.41 27.3366601 2.137.2366606 1.59 10.8366608 0.583.6366610 1.065.1366612 0.871.9
An initial petrographic study has identified bornite, chalcocite, covellite and idaite as the primary copper minerals that appear associated with hydrothermal alteration. Microscopic textural features indicate that chalcocite, covellite and idaite are replacing bornite. The nature of the replacement could be a late hydrothermal event or supergene. The dominant alteration assemblage is represented by iron to epidote to chlorite to quartz to calcite.
The andesitic host rocks of presumed Larimide age have undergone hydrothermal alteration, represented by patches, cavity filling and microbrecciation.
Additional and pending exploration on the Chunibas property includes:
Continuous rock-chip channel sampling over outcrops is under way;Follow-up more detailed petrographic studies to be initiated;A trenching program between individual outcrops is being evaluated; success of this program will depend on the depth of cover between outcrops;Induced polarization as well as ground magnetic surveys are being considered to help define the boundaries of the system.
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About San Marco Resources Inc.
San Marco Resources is a Canadian mineral exploration company with a portfolio of promising projects in mining-friendly Mexico, including the Chunibas, Mariana and 1068 projects in Sonora state.
National Instrument 43-101 disclosure
This news release has been approved by San Marco's chief executive officer, Robert D. Willis, PEng, a qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects, of the Canadian Securities Administrators. He has verified the data disclosed, including sampling, analytical and test data, underlying such technical information by reviewing the assay reports provided to San Marco by its independent testing laboratory.
The company has implemented quality assurance and quality control programs to ensure sampling and analysis of all exploration work is conducted in accordance with the best-possible practices. All sampling programs are carried out in a careful and diligent manner using scientifically established sampling practices designed and tested to ensure that the results are representative and reliable. Quality control programs appropriate to the type of sample and the mineralization are implemented, including such measures as external blanks, standards and duplicate samples. The security of samples from sample acquisition to analysis is a vital component of the sampling process. Procedures include the use of secure core logging, sampling, storage and preparation facilities as appropriate as well as the prompt, secure and direct shipping of samples to the laboratories. Appropriate sample security procedures are employed given the geographic and topographic conditions and the logistics created by the site location.
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