The company originally agreed to issue up to 24.19 million shares at C62c each to raise up to C$15 million but increased the offering a day later due to positive institutional and retail demand.
Lumina updated the inferred resource for its Cangrejos gold-copper resource three weeks ago, more than doubling the contained gold to 8.8 million ounces.
Cangrejos also contains 1.1 billion pounds of copper, 8.2 million ounces of silver and 23 million pounds of molybdenum.
Lumina expects to deliver a preliminary economic assessment for the project in mid-2018.
The company acquired an additional 615ha adjacent to the Cangrejos project two weeks ago.
It ended the September quarter with US$3.43 million in cash, compared with $12.3 million at the end of 2016, due to its increased exploration expenditure in Ecuador.
Lumina's share price rose more than 3% to C66c at yesterday's close, still a long way off the 52-week high of $1.20 reached earlier this year.
