The report followed successful drilling of around 20,000 meters in 2018 and a maiden PEA (preliminary economic assessment) is now underway.
The results of this are anticipated in the first half of 2019.
Key takeaways of the updated estimate include that the zinc zone mineral resource is now described as indicated - a higher confidence classification.
This includes a higher-grade portion of the deposit.
Also, the updated lower confidence inferred mineral resource is of a similar size and grade to the previous zinc zone resource reported in 2017, Tinka highlighted.
"The updated tin zone inferred mineral resource is also substantially larger," the company noted.
The indicated zinc zone mineral resource of 11.7 million tonnes has a grade of 6.9% zinc, 0.16% lead, 84 grams per tonne (g/t) indium and 15 grams per tonne silver (8.1% zinc equivalent).
That contained 1.8 billion pounds of zinc, 983 tonnes of indium, 5.8 million ounces of silver, 42 million pounds of lead.
The inferred zinc zone mineral resource had 45 million tonnes grading 5.6% zinc, 0.23% lead, 67 grams per tonne (g/t) indium and 17 grams per tonne (g/t) silver.
That contained 5.6 billion pounds of zinc, 3,003 tonnes of indium, 25.2 million ounces of silver and 230 million pounds of lead.
For the tin zone, the inferred resource was 14.5 million tonnes at a grade of 0.63% tin, 0.21% copper, and 18 grams per tonne (g/t) silver (0.70% tin equivalent).
This contained 201 million pounds of tin, 67 million pounds of copper and eight million ounces of silver.
The resource estimate has an effective date of November 26, 2018, and are reported above a net smelter return (NSR) cut-off value of US$55 per tonne.
For the zinc zone, metal price assumptions were US$1.15 per pound zinc, US$300 per kilogram indium, US$15 per ounce silver and US$1 per pound lead.
For the tin zone, they were: US$9 per pound tin, US$2.85 per pound copper and US$15 per ounce silver.
Tinka's flagship Ayawilca carbonate replacement deposit (CRD) lies in the zinc-lead-silver belt of central Peru, 200 km northeast of Lima.
In Toronto, Tinka shares ticked up 2.94% to $0.35 before dropping back to $0.34.
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