 | 
| |
 |
|
|
|
|
Silver Dome
The Silver Dome Property consists of 60 unpatented mineral claims and a lease on one square mile of land from the State of Utah, and covers approximately 760 hectares (1,880 acres), located 72 kilometres (45 miles) northwest of Delta, Utah along the western margin of the Fish Springs Mountains. Subject to net smelter royalties, Columbus controls a 100% interest in the property.
Silver mineralization at Silver Dome occurs with very fine-grained galena disseminated within flat-lying, Ordovician calcareous sandstones and cross-cutting, high angle structures. Due to the flat topography in the project area, and subdued outcrop exposure, size and geometry of the silver-bearing zones have not been determined. Initial mapping and sampling identified disseminated mineralization, typically containing values ranging from 15 to 100 grams per tonne silver, within an area of intermittent bedrock measuring 1000 metres (m) x 100 m and in float boulders on shallow pediment up to 150 m from the bedrock exposures. Recent (2006) evaluation demonstrated widespread silver mineralization including sampling which has yielded grades up to 2.7 kilograms per tonne (2,700 g/t or 79.8 opt) silver (Ag). The prospect area has never been drilled.
Columbus Gold's target at Silver Dome is bulk-mineable silver mineralization within the flat-lying calcareous sandstone host rocks amenable to open-pit development. Preliminary metallurgical test work on 16 samples of variable grade and location yielded recoveries ranging from 47% - 91% (averaging 71%), suggesting the mineralization may be suitable for heap leaching or conventional milling with cyanide recovery.
The Company is currently carrying out more detailed geologic mapping, sampling and trial geophysical surveys. An initial drilling program will be considered later this year.
|
| | |
){kind=link}