Horizon Minerals Limited has completed up infill and extensional diamond drilling at the Rose Hill gold project in Western Australia.
Rose Hill is located approximately 0.5km southeast of Coolgardie and lies on the western margin of the Archean Norseman-Menzies Greenstone Belt. Mineralisation is hosted within the main Rose Hill diorite (porphyry), adjacent to the hanging wall ultramafic and an eastern porphyry unit alongside the Greenmount Sill.
The company advised on 9 June, 2020 that Rosehill Mineral Resource estimate to 300 metres depth currently stood at 1.2 Million tonnes (Mt) at 2.49 grams per tonne (g/t) of gold (Au) for 95,000 ounces (oz) at a 0.7g/t lower cut-off grade.
Three holes were drilled in April 2020 for 398 metres to a maximum depth of 172 metres with the program temporarily reduced due to the COVID-19 pandemic.
Significant high-grade intercepts received by Horizon included:
- 4m at 17.92g/t Au from 78.7m (RHRCD20015)
- 7m at 9.77g/t Au from 84.3m (RHRCD20014)
- 5m at 2.10 g/t Au from 142m including 2.5m at 3.16g/t Au from 114.5m (RHRCD20018).
These results and recently retrieved historic data are expected to inform an updated open pit and underground geological model and Mineral Resource estimate which is forecast to be completed in the September quarter this year.
Core samples have provided geotechnical information and metallurgical samples for confirmatory test work as part of the mine optimisation and reserve generation studies, Horizon outlined.
Moreover, the company has plans for further infill and extensional drilling at Rose Hill and the adjacent Brilliant North gold project for the September and December quarters 2020.
Horizon Managing Director Jon Price said Rose Hill continues to demonstrate significant open cut and underground potential.
“The Company’s aim is to generate additional high-grade open pit and underground reserves supplementing the large scale baseload Boorara project in Kalgoorlie to underpin a longer-term production pipeline and a standalone processing plant at Boorara.”