MAE CHEDI PROJECT

The Mae Chedi property is located northeast of Chiang Mai, close to the main highway connecting Chiang Mai with Chiang Rai. A tungsten ore (scheelite), associated with tin (cassiterite) occurs in quartz veins and stockworks in granitic rock and in the contact zone between these and carboniferous mafic intrusives. The ore is also disseminated in both the granites and in the mafic intrusives.

The Mae Chedi mine operated as a ‘gravel pump’ (hydraulic) mine during the 1970s, producing a tin/tungsten concentrate. Contrary to common practice during these years, the mine owners completed a rock sampling survey over much of the mine area. The results of this survey indicated an extended anomalous zone covering up to 30 hectares, over which combined tungsten tin values of 0.3% were measured.

Amanta has initiated a rock and soil sampling programme (on a 500m x 500m grid) to confirm these anomalous values. Early results have shown large areas underlain by rocks with anomalous tungsten and tin values, including a very extensive area anomalous in tin (with assay values of up 1.5% tin) and a smaller anomalous tungsten area with assay values of up to 7% WO₃. Further detailed work will be required to define any mineable resource.