Investors are likely to keep an eye on the following small-cap stocks listed on the Australian Securities Exchange.

Great Western Exploration (ASX:GTE)

The company said assays from its first broad-spaced reverse circulation drilling program at the Sumo target in Western Australia, which tested a discrete lag niobium soil anomaly, were released but no significant results were obtained.

Castile Resources (ASX:CST)

Castile Resources intersected alteration associated with iron ore, copper and gold mineralization at Pathfinder 38 in the Northern Territory using the ambient noise tomography survey.

Sarytogan Graphite (ASX:SGA)

Sarytogan Graphite achieved over 90% concentrate grade from the Central Graphite Zone in Kazakhstan, according to the initial results of its ongoing metallurgical variability testing program.

Variscan Mines (ASX:VAR)

Variscan Mines said the second batch of assay results from its underground drilling campaign at the Udias mine in Spain delivered high-grade zinc and lead intercepts targeting zones with no historical drilling.

Genmin (ASX:GEN)

Genmin signed a non-binding term sheet for a $3 million convertible notes offer with US-based ID Advisors. If the offer is successful, the company plans to use the proceeds to advance the development of its Baniaka project in Central Africa.