Tinka expands zinc mineralization at South & West Ayawilca

• 1.2 metres at 8.9 % zinc, 0.3% lead & 380 g/t silver from 190.0 metres depth, and
• 4.3 metres at 7.8 % zinc, 0.1 % lead & 57 g/t indium from 400.1 metres depth;

Hole A17-076 (South Ayawilca):

• 2.8 metres at 4.5 % zinc, 0.4 % lead, 54 g/t silver & 43 g/t indium from 196.7 metres depth;

Hole A17-077 (Central Ayawilca):

• 2.3 metres at 9.2 % zinc, 11 g/t silver & 79 g/t indium from 337.3 metres depth.

Dr. Graham Carman, Tinka´s President and CEO, stated: "The 2017 Ayawilca resource step-out drill program continues to provide excellent results. The drilling is expanding our zinc footprint well beyond resource boundaries, as well as highlighting additional areas for potential discoveries.  South Ayawilca remains open for zinc extensions over a strike distance of at least 700 metres, towards the southeast, and remains one of our primary target areas for upcoming drilling. Significantly, zinc grades improve to the south in some areas associated with massive pyrite replacement rather than pyrrhotite or magnetite, indicating high grade zinc mineralization extends beyond the magnetic geophysical anomalies and opening up new areas to explore. At West Ayawilca, high grade zinc mineralization continues at least 150 metres beyond the 2016 resource boundary to the northeast.  Tinka continues to aggressively drill test zinc targets on the Ayawilca property, heading towards a resource upgrade during the last quarter of 2017."

Results are now reported for 25 holes of the 35 holes completed in the 2017 drill campaign.   Two diamond drill rigs continue to operate at the project currently drilling at Zone 3 (hole A17-092) and South Ayawilca (hole A17-093) – see Figure 1.  Results are pending for several holes at the Valley and Chaucha areas. 

Maps attached: Drill hole locations at Ayawilca (Figure 1); Zinc grade-thickness map (Figure 2); Cross section of West Ayawilca (Figure 3); Geological map with all 2017 drill holes at Ayawilca and Chaucha (Figure 4). 

True thicknesses of the zinc intersections are estimated to be at least 85% of the downhole thickness, except where otherwise noted in footnotes to Table 1. All significant results of the 2017 program are summarized in Table 1 with the strongest intercepts in bold text. Table 2 summarizes all drill collar information to date. 

Table 1.  Summary of 2017 Drill Results from Ayawilca

Drill hole	From m	To m	Interval m	Zn %	Pb %	Ag g/t	Indium g/t	Reported
A17-0561	90.30	90.65	0.35	29.0	0.4	82	443	April 3 '17
and	113.00	113.40	0.40	31.2	0.0	85	759	April 3 '17
and	126.00	189.90	63.90	5.6	0.1	17	29	March 6 '17
including	127.50	145.40	17.90	11.6	0.2	36	20	March 6 '17
including	127.50	133.30	5.80	22.5	0.3	77	50	March 6 '17
and	199.20	204.70	5.50	5.8	0.1	6	38	April 3 '17
and	228.50	233.70	5.20	12.9	0.0	11	162	March 6 '17
and	242.00	293.90	51.90	10.1	0.1	624	233	April 3 '17
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