Tough question to answer. Lots of people simply multiple the no of Resource oz x gold price which is unrealistic because all of the Resource oz will not be mined. Better way to assess value is looking at the NPV. With this in mind, take a look at the Scoping Study announcement but you should apply discounts to allow for the risks (basic level of study, lack of reserves/measured resources, ability to raise finance, etc):
The 240k oz of gold includes both inferred and indicated quantities. See JORC Resource table at bottom of most announcements. 80k oz is indicated and 160k oz is inferred. I would say the inferred material is "high quality" inferred. It is based on data from SOG and SBM who were meticulous with their resource drilling and estimates etc.