260 E. 0. Thiele. 



100.07 

 Density - 3.580 



An analysis by the wi-iter of a somewhat purer sample con- 

 taining less of the green mineral was, unfortunately, not com- 

 pleted. 



It indicated less than 0.5 per cent. Si02, nearly 90 per cent. 

 AlgOg, and only a traoe of CaO and MgO. 



(2) Chromite has long been known to exist in this area, but 

 on account of the inaccessibility of the district, little exploratory 

 work has been done. A few shallow holes have been sunk, ex- 

 posing a few lenticular blocks up to several hundredweight in 

 size. 



Both microscopic and chemical investigation of the serpentine 

 shows the presence of the mineral in small amount throughout 

 the area. The following analysis was made by Mr. Ampt. 



