Karlawinda milled 1.02 million tonnes of ore at a head grade of 1.02 grams per tonne gold and a recovery rate of 91.6% to produce 30,841 ounces of gold.
The result was achieved despite a week of mining disruptions in the Bibra open pit after 220mm of rain last week and a two-day mill shutdown to repair an electrical fault.
Production for the nine months to March 31 was 91.156oz, keeping the company on track to meet the mid-point of full-year guidance of 115,000-125,000oz.
Cost data will be released later this month.
According to Aurum Analytics, Karlawinda was Australia and New Zealand's fourth-lowest cost producer in the December quarter and second-lowest cost open pit producer.
Capricorn's cash and gold on hand at March 31 was $119.5 million, up $27.8 million over the first three months of the year.
The company's net cash position improved from $41.7 million at the end of December to $69.5 million at the end of March.
Capricorn was due to release an initial ore reserve for its 2.8 million ounce Mt Gibson project in WA in the March quarter.
Capricorn shares were up 3.5% to $4.79, the highest since January.
