Sunstone Metals Ltd (ASX:STM) has intersected an extensive porphyry system at Limon prospect within the Bramaderos Project in southern Ecuador.
The second hole (LMDD002) drilled at Limon has intersected more than 200 metres of visible and persistent disseminated chalcopyrite and molybdenite with some bornite in a strongly altered porphyry system.
The alteration suggests that the ‘hottest’ and typically higher-grade portion of the porphyry system has not yet been intersected.
Sunstone managing director Malcolm Norris said it was an extremely promising result.
Results “confirm we are in a porphyry system”
“We are very encouraged by these early results at Limon,” he said.
“We have drilled two diamond holes into parts of a new mineralised porphyry system and its associated large-scale alteration zone but are yet to test the core of the system, which is our primary target.
“The drill core clearly shows good development of ‘B veins’ containing some chalcopyrite and molybdenite and local minor bornite.
“Results from drilling and from surface datasets confirm we are in a porphyry system.
"Porphyry systems are typically zoned in relation to geochemistry, alteration style and vein mineralogy and interpretation of geology and geochemistry can define vectors towards better mineralised domains.”
“This is an outstanding start”
Norris added: “We have seen gold to copper ratios established from surface trenching and we will review the pending assay results from LMDD002 in this context.
“This is an outstanding start and we expect the new few holes at Limon to deliver some very good results.”
Assay results for this hole are expected in June.