SXJ PPL EMENT 
ENTHALTEND DIE 
AUSZUGÉ UND ÜBEESETZUNGEN 
DÉR IM 
FÖLDTANI KÖZLÖNY 
MITGETHEILTEN 
OEIGINAL-AUFSÁTZE UND YERHANDLUNGBN. 
Xffl. BÁND. 1KS3 JANUAR—MÁRZ. 1-3 HEFT. 
THE FIRST MINING EXPOSITTON IN THE II. S. OF AMERICA 
AT HENYER, COLORADO. 
By Dr. J. Szabó, 
PrOFESSOR AT THE UnIVERSITY OF BUDAPEST. 
(Read in tlie session of the liungarian geological Society. October 25. 18S2.) 
After landing in N.-York (on tlie 17 ofjuly 18821 my first step was 
to make tlie programm of my travels in the U. States; and seeing the 
anouncement of a national mining and industrial Exposition about to be 
lield at Denver, I determined to go there, in order to see the mineral 
resources of the pacific mining states and territories, wliich were to be 
hrought together in a manner never yet seen in those distant regions botli 
as regards the different qualities an the great quantity of the ores and 
minerals of the numberless mines represented there. 
The area of the rniniog districts comprising besides Colorado the 
state of California and the territories of Wyoming Dakota Montana Wa- 
shington Orégon Nevada Utah Arizona New-Mexico and even the far distant 
Alaska, is nearly one tkird of the whole area of the Union. Somé of the 
mineral veins known here belong to the ricliest ever mentioned in the mi¬ 
ning records of the whole world, nothwith stand ing t hat this branche of 
industry is comparatwely very young and consequently still far from having 
atteined its full developement. 
From Washington I went across the continent as far as San Fran¬ 
cisco, where I had the opportunity of seeing in the State Museum a small 
collection both mineralogical and geological of the mining districts in 
qnestion, so that I was enabled to get a generál idéa of the objects to be 
seen at tlie exposition. It was particularly important to become aquainted 
with the rocks and ores of California, since this State had declined sending 
anything to Denver. 
From San Francisco I went to Virginia City (Nevada), in order to 
investigate the trachytic rocks of that renowned district and see somé of 
6 
Földtani Közlöny. XIII. köt. 1883. 
