Dia Bras Exploration‘s (DIB-V) shares soared 27% in trading today as it reported grades of up to 5,140 grams silver per tonne in samples from the La Reina sector of its Cusi property, in Mexico.
The positive results came from a wide-scale prospecting, mapping and sampling program carried out in March and April that revealed mineralization in gold-silver veins and breccias of epithermal origin.
In total, 446 samples were taken from mineralized structures at Cusi, which totals 75 sq. km, including the La Reina, El Zorro and Coyote zones.
More than half of the samples returned grades higher than 100 grams silver per tonne, with 16 yielding at least 500 grams silver and eight assaying more than 1,000 grams silver.
La Reina returned a grab sample grading 5,140 grams silver, 1.67 grams gold and 7.64% lead, from a brecciated quartz stringer with chlorite, limonite and manganese oxide.
High-grade gold and silver was found at El Zorro, including a chip sample grading 31.5 grams gold per tonne and 490 grams silver, with traces of copper, zinc and lead. The high-grade sample came from highly fractured quartz stockwork with limonite coating.
Dia Bras is planning to follow up on the results with a drill program at La Reina in the fall.
In late afternoon trading, Dias Bras shares were up 13, or nearly 28% at 60 on close to 7 million shares of volume. The stock has a 12-month trading window of 38-$1.45.
La Reina is a north-trending fractured, brecciated and silicified zone, up to 50 metres wide and 400 metres long. Along with the Princesa zone, La Reina has seen the most historic development in the area. El Zorro is a north-trending quartz zone up to 1-2 metres wide and 150 metres long.
Located in the Sierra Madre Mountains, 125 km west of the city of Chihuahua, in Chihuahua state, the Cusi property has seen historic mining from the 18th century until the 1930s.
Dia Bras also holds the advanced Bolivar project in Chihuahua, a past-producing zinc-copper mine.
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