68 J. L. Smith on new localities of Minerals, etc. 
There are two minerals consisting of minute micaceous scales 
on the quartz containing this gray copper. One of them I could 
not obtain in sufficient quantity for satsitotte ; from an im- 
perfect examination I conclude that it is mu uscovite ; the other 
oveohsr: a soft unctuous talc-like ieacien is nacrite, compose: 
as fo 
‘Silica, . - - - - - 65°02 
Alumina, - - . - - - 2611 
Oxyd of iron, - - - - = 220 
Manganese, . - - - - trace 
Potash and soda, - - - os ae 
Water, 2+? = - - - - 498 
99°49 
These minerals came from an sae interesting mine 
in Arkansas that is as yet almost unexplored; I have obtained 
a full description of it from Prof. Cox and I think it woul 
well to give it here, for besides being likely to prove of consid- 
erable commercial value when properly explored, there wi 
doubtless be found many interesting mineral species the 
The Kellogg mines are situate ‘10 miles north of the city of 
Little Rock in Pulaski Co, Ark. The country in the vicinity is 
roiling, the highest hills are about 270 feet above the water level 
of the neig ghboring streams. The surface rocks are thick an 
thin beds of sandstone alternating with shales occupying the 
base of the coal measures. The rocks are but little disturbed 
and are for the most part horizontal. There are no metamor- 
hic recks showing themselves at the surface nearer than Little 
ock on the south side of the Arkansas river, Innumerable 
meee of milky quartz are seen traversing the sandstones an 
8 
es. 
operations carried on of B80 | for about one year, when the 
flattering accounts of the gold discoveries in California ae 
the miuers to leave, and the work which had bee n badly co 
ucted was abandoned. Many tons of the ore ibis is an ies 
gentiferous galena (containing 60 to 200 ounces of silver to the 
ton) were extracted from the. mine and finally the greater part 
was shipped to England and sold at a good price. A smelting 
furnace has been erected on the grounds, but for lack of skill, 
copa: ponte succeeded in working the ore profitably, 
consequently th npn was produced that the ore could 
not be smelted, bai there is no good reason for such an opinion. 
Since the mines have been abandoned, hee old shafts, ranging 
in a from fifteen to seventy feet, are all filled in me the 
has become covered with a hens spdancesaite of 
