Tinka Resources Limited announced results for six recent drill holes from the Company's ongoing infill and resource expansion drill program at the Ayawilca project in Peru. All six drill holes are infill holes from the South Ayawilca area. Hole A23212
returned much better than expected results with a thick and highgrade zinc intersection of 145.2 metres grading 10.9% zinc (estimated true thickness of ~ 100 metres) including 29.3 metres grading 20.2% zinc from a shallow depth of 158 metres. The drill program at South Ayawilca continues to exceed their expectations with respect to the continuity of the ultra high zinc grades. Drilling is expected to continue with two rigs until the end of April. The highlighted drill intercepts for the six drill holes from South Ayawilca in this news release. The Company has now completed approximately 10,000 metres of drilling in 30 holes in the 20222023 resource definition expansion program. A total of 23 holes have now been reported. The complete list of holes drilled in the 202223 drill program. This news release includes five holes drilled in a fan pattern from the same platform (holes A22206, 208, 210, A23212 and 215) targeting the core of an overturned fold `anticline' covering approximately 200 metres of strike length (north south). An impermeable quartz sandstone, a unit of the local Goyllar formation, forms the footwall to the massive sulphide zone which has replaced the favourable Pucara limestone in the core of the anticline with substantial
quantities of zinc. The sandstone is folded around the Pucara limestone forming an efficient trap which has
concentrated the zinc mineralization in the hinge of the fold and along the contacts with the sandstone. Highgrade zinc is associated with semimassive sulphide (3070% sulphides) to massive sulphide (70100% sulphides) mineralization as sulphide replacements of the limestone and as veins into the sandstone. The sulphides are dominated by sphalerite, pyrite, and ironrich carbonates (siderite) with minor magnetite, pyrrhotite, and quartz. Sphalerite (both high and lowiron varieties) typically comprises between 30% and 90% of the total sulphides. An interpretation of the zinc mineralization in the recent drill holes is highlighted in Figure 2. The massive sulphide body dips at a moderate angle to the east. A major northeastsouthwest trending fault located at the northern edge of the sulphide body truncates the mineralization to the north. This "060 Fault" could also be an important conduit for the mineralization at Ayawilca. The final hole reported in this news release, A22201, is a deepened exploration hole from 2017 (A17077) to 430 m depth, targeting the possible extension of highgrade zinc mineralization intersected in nearby hole A22195 (6m at 18.8% Zn from 392.6m depth) on the eastern side of South Ayawilca (see link). On this occasion, A22201 did not intersect any significant mineralization possibly as a result of the thinning out of the manto structure in A22195. Drill holes are diamond HQ size core holes with recoveries generally above 80% and often close to 100%. The drill core is marked up, logged, and photographed on site. The cores are cut in half at the Company's core storage facility, with halfcores stored as a future reference. Halfcore was bagged on average over 1 to 2 metre composite intervals and sent to SGS laboratory in Lima for assay in batches. Standards and blanks were inserted by Tinka into each batch prior to departure from the core storage facilities. At the laboratory samples are dried, crushed to 100% passing 2mm, then 500 grams pulverized for multielement analysis by ICPMS using multiacid digestion. Samples assaying over 1% zinc, lead, or copper and over 100 g/t silver were reassayed using precise oregrade AAS techniques. Samples within massive sulphide zones were also assayed for tin using fusion and AAS finish.