Sept 12 (Reuters) - Richmont Mines Inc RIC.TO :
* Richmont Mines announces positive revisions to 2016 guidance
* Says company-wide annual gold production guidance estimates have increased to between 98,000 and 106,000 ounces
* Richmont Mines Inc says potential production increase at Island Gold of up to 45% over 2015
* Revising Canadian to US dollar exchange rate assumptions to 1.33 Canadian dollars to US dollar for period January to June
* Company-wide annual cash cost guidance estimates have decreased to between $885 and $945 per ounce (US$675 and US$720 per ounce)
* Company-wide annual exploration expenditure guidance estimates have increased to $17.1 million (US$13.1 million), from $15.5 million
* Annual project capital investment guidance estimates for Island Gold mine have increased to $46.1 million (US$35.2 million)
* Company-wide annual sustaining capital investment guidance estimates have increased to $25.9 million (US$19.7 million), from $24.1 million Source text for Eikon: Further company coverage: RIC.TO