Dolomite

Here's a sample of dolomite, showing creamy-white rhombs crystals on matrix. The specimen comes from the Stone Claim. In a report from the Department of the Interior "Yukon Territory" 1926, "STONE CLAIM.-This claim is situated on the northern slope of Keno hill. A good surface showing was located and an adit driven into the hill below it. This adit is 250 feet long with two cross cuts 12 and 14 feet. The ore encountered in the adit is disseminated and much lower in grade than on the surface.  And in a Canada Dept. of Mines report, 1930, "Stone Claim: The owner, Mat Butyer, is engaged in driving a long tunnel to cut, at a lower elevation, the vein found in the older workings. This tunnel is now 240 feet long and is still in overburden. About 100 feet from the portal the tunnel passed through a reef of schist, but after passing this once more entered gravel. The gravel contains boulders of ore material such as siderite with galena and grey copper, and also pyrite and cbalcopyrite. The pyritic material carries high gold values. The gravel in which this material was found is quite evidently of glacial origin as it carries pebbles and boulders of granite, a rock which does not outcrop on Keno hill. Consequently the finding of the ore material in it cannot be looked upon as indicating with any certainty the occurrence of veins close at hand. This tunnel is 460 feet below and 1,400 feet distant from the older workings. "

The Kino Hill Silver District in Canada’s Yukon Territory is a large, high-grade silver property and, according to their website, has the potential to become the largest Canadian silver producer. The mineral deposits in this area are typically found in veins or lodes along fault zones and were significant producers of silver, lead, zinc, and cadmium during the 1940s and 1950s. The townsite of Keno City, located between Keno and Sourdough Hills, serves as the local centre for this historically important mining district.