Hidden — Mineral Research in Llano County, Texas. 425 



Art, XLY. — Some Results of late Mineral Research in 

 Llano County \ Texas * by William E. Hidden. 



The noted gadolinite locality in Llano County, Texas, known 

 as Barringer-Hill, was reopened* and thoroughly prospected 

 by the writer, during the winter of 1902-03, with very 

 encouraging results. All the old cuts were cleaned out and 

 extended, and a systematic development of the mine was 

 begun at the southeast point of the hill, and at as low a 

 level as the river terrace would permit. The plan was to 

 remove the hill by blasting and gradually make a dump of 



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it towards the near-by Colorado river. The season proved 

 to be a very propitious one and much good work was accom- 

 plished. Seven years had elapsed since any work had been 

 done npon the property, but in a short time all the old familiar 

 minerals had been rediscovered either in new openings or in 

 extensions of the original workings of Mr. Barringer. 



* The development was undertaken under the auspices of the Nernst 

 Lamp Company, of Pittsburgh, Pa., to whom all the output was sent. 



