The grab samples, completed in May 2018, were taken from the cobalt, copper, silver, lead, nickel and manganese projects inside one of the galleries at its Buran project in Almeria and from the waste dumps of old cobalt mines at its Beatriz project in Granada province in southern Spain.
"The analytical results from this sampling program will assist us in identifying potential target areas for core drilling during our exploration program," said Pat Morris, president of Primary.
"The unexpected high contents in other important elements are very encouraging and speak to the potential upside in our search for these critical energy metals."
READ: Primary Cobalt Corp is building a significant exploration portfolio in Spain and British Columbia
At the Buran project, the company said although it was not possible to get access to the cobalt-rich samples in the old galleries, it were found very interesting mineralizations with high molybdenum contents and overall a massive dike that showed 968 parts per million (ppm) (0.0968%) of silver content of 1%/kg per ton, 1.5% copper and 20% lead.
At the Beatriz project, high cobalt samples were recorded (including 3950ppm, 3850ppm and 6040ppm cobalt in three samples), alongside finds in nickel and copper.
The company said concentrations of primary cobalt minerals are important and it will continue to further explore to determine to their regional extension.
Shares of Primary Cobalt were at C$0.06, up 20.0% on Monday afternoon.