20 



top of a hill is about six feet wide extending along the 

 surface one hundred or more feet. , 



Several persons who had seen it told me of a copper 

 vein about thirty miles below the Hot springs, which is said 

 to extend across the Rio Grande. I have seen specimens 

 of this ore, which is a malachite or green carbonate of 

 good quality. 



COPPER IN MASON COTJNTy. 



About two and a half miles northwest of the town of 

 Mason, near the Menardville road, there is a vein of cop- 

 per near the bottom of a ravine ; its width is little more 

 than six feet in feldspathic and quartoze rocks. The best 

 surface specimens of this ore yield about ten per cent, of 

 copper ; its appearance is promising. * 



Near the head waters of the Little Llano are copper 

 veins of similar quality in similar rocks. 



PTEOLUSITE. 



There is a vein nearly ten feet thick of this mineral near 

 the top of a mountain in the eastern part of Mason county, 

 at a place called the Spiller mine, from which about thirty 

 tons of ore were sent abroad last spring to be smelted, it 

 being reported to be very rich silver ore. The assay and 

 sinelting showed that it had not enough sUver to pay for 

 working. 



Of black, brown and white colors are quite common in 

 several parts of Llano county, in granite regions. 



GARNETS. 



In the mica schistoze rocks near the Sandys in the mid- 

 dle and southern part of the same county. 



AMETHTSTS. 



In the granite regions of Burnet and Llano counties. 



MOLYBDENA. 



In Burnet and Llano in thin layers in gneissoid rocks. 



