Ressources Appalaches inc.

Ressources Appalaches inc.

July 20, 2009 10:56 ET

Ressources Appalaches: Resource Calculation for the Dufferin Mine

RIMOUSKI, QUEBEC--(Marketwire - July 20, 2009) - Ressources Appalaches (TSX VENTURE:APP) acquired the Dufferin Mine and its processing plant with the goal of putting it back into production at the earliest possible date. Since that time, the Company has been engaged in a program of resource calculation based on the proven methods employed by Bendigo Mining in Australia for deposits of saddle-reef vein type.

Deposits of this type were first discovered in the Bendigo region of Australia, which has so far produced 22 million ounces of gold. That mine has been worked to a depth of more than 750 metres. The Bendigo and Dufferin deposits are similar primarily in terms of their mineralogy and morphology. Their gold-bearing quartz veins are localized in the noses of folds and in fine argillaceous beds. Their veins are repeated regularly in depth, following the axis of an anticline. The main similarities are:

- Average grade: 7-12 g/t Au

- Gold associated with quartz veins

- Coarse gold

- Disseminated sulphides

- Veins located in anticlinal folds and thickenings in the noses of folds

- Cambro-Ordovician turbidite host rocks

- Veins located in the fine-grained beds

- Wide variety of quartz veins: saddle-reef, stockwork, stratiform, & faulted

Since the gold is coarse grained and erratically distributed in the veins, a resource calculation for these deposits cannot be performed in a standard manner, because the drillholes recover only a fraction of the gold particles. The grade of the veins is usually under-evaluated, and occasionally over-evaluated when coarse gold is encountered (nugget effect). Accordingly, the resource calculation must include additional parameters, e.g., certain geological observations as well as analytical results.

Resource calculation at Bendigo

In order to estimate the grade of its deposit correctly, Bendigo mainly bases its calculations on geological observations of drill core: the texture of the quartz veins, the amount of quartz, the presence of visible gold, and the presence of certain sulphides (see 2008 Annual Report, Next, these observations are weighed against the analytical results from the drill core.

Resource calculation at Dufferin

At the Dufferin Mine the resource assessment is currently in progress, using a method similar to that at Bendigo, which will in addition be combined with bulk sampling. The convenience of having an onsite processing plant and underground access will facilitate the application of this evaluation method.

The Company plans to publish its resource calculation when it has tested its evaluation method by comparing it with the results of the bulk sampling and once regular production is under way.

About Ressources Appalaches

Since it was first established in 1994, Ressources Appalaches has targeted the discovery and development of deposits of base and precious metals located in the Appalachians and on the Quebec North Shore. The Company holds some twenty mineral properties in various stages of development.

Ressources Appalaches has become, as of April 9th, 2009, the sole owner of the Dufferin Mine, located in Nova Scotia and intends to become a gold producer soon. Pictures of the Dufferin Mine and its mining facilities are available on the Company's website at

The contents of this press release were prepared by Geologist Alain Hupe, a Qualified Person as defined in NI 43-101. Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Contact Information

  • Ressources Appalaches
    Andre Proulx
    Ressources Appalaches
    Christian Guilbaud
    Investor Relations