316 Scientijic Intelligent. 



23. Additional note concerning the Tungsten and Tellurium. 



We have not room to insert in the present number, a de- 

 scription and a chemical examination of the ores of tungsten and 

 tellurium recently discovered in Connecticut ; they will ap- 

 pear in our next. 



In the mean time it may be stated, that the tungsten and tel- 

 lurium are found blended in the same pieces, but whether in 

 liiere mixture, or in chemical combination, is not yet quite de- 

 termined. Many specimens of the tungsten exist without the 

 tellurium, but every piece which has afforded tellurium has al- 

 so afforded tungsten, and in greater abundance. Even in well 

 defined crystals, both metals have been found in the same crys- 

 tal, and where the external appearance was homogeneous. In 

 other specimens a difference seems to be apparent, and a pro- 

 per ore of tellurium appears to be blended with a proper ore 

 of tungsten. This latter ore is the wolfram, composed of oxid 

 of tungsten, or as some choose to say, tungstic oxid combined 

 with iron and manganese. The crystals, however, are octahe- 

 dral, a fact which we believe is not mentioned of this species by 

 authors, although this form is found in the calcareous tungsten. 



The Bismuth mine in which these ores are found is the 

 property of Mr. EphraimLane. Letters addressed, post paid, 

 to him at New Stratford, town of Huntington, Connecticut, 

 will find him through the Post Office ; and he will, for a rea- 

 sonable compensation, pack boxes more or less extensive, for 

 mineralogists and others. As Mr. Lane is by occupation a 

 farmer, and is obliged to blast a quartz gangue in order to ob- 

 tain his specimens, he cannot be expected to transmit them 

 gratis. His mine, which has been sunk only ten feet, afibrds 

 native bismuth, native silver, magnetical and common iron py- 

 rytes, and copper pyrites, (the two latter crystallized) ga- 

 lena, blende, tungsten, tellurium, &c. 



It is expected that the shaft will soon be sunk deeper, when 

 probably a more abundant supply of good specimens will be 

 obtained. 



N. B. The silver and galena are the least abundant. 

 March 8^A,^18I9. 



