Haworte. | Ore Deposits. 107 
are found to a varying extent in all the mines. Occasionally 
their abundance is so great that the zinc ore is hardly worth 
mining. 
The geographic distribution of these minerals is quite 
varied. At times parties have thought they could trace a 
certain connection between different points where they are 
most abundant. For example, in 1899 the writer listened 
with great interest to a discussion by a mine operator who 
claimed that there was a strip rich in pyrite extending from 
the east half of section 27, just north of Shoal creek, north- 
eastward entirely to Short creek. This contention, however, 
was hardly correct, as there were certain breaks in it where 
ore was unusually free from such contamination. Section 27 
does contain large bodies of ore unusually mixed with pyrite 
and marcasite. So do afew other places that could be named. 
So far as the writer has been able to determine from very close 
observation extending over a number of years, it is impossible 
to locate any definite connection between various places where 
these minerals are unusually abundant. In most places mar- 
casite is more abundant than pyrite. Thisis particularly true 
in section 27, and also to the southeast of Galena, in the east 
part of section 23 and in 24. At the Gracie Clark mine, north 
of Empire City, pyrite is more abundant than marcasite. 
Next in abundance as an associated ore, speaking for the 
entire Galena-Joplin area, calcite and dolomite could be men- 
tioned, but in the Galena district proper neither of these 
minerals is found in large quantities, and throughout the 
greater part of the richest mines they are absent entirely. 
Wherever a mine is opened in ground which carries limestone, 
calcite, and probably dolomite, may be expected, in fact are 
always found. Thus, on the Gracie Clark land limestone is 
abundant, the flint area being small, and calcite is likewise 
abundant, with an occasional trace of dolomite. The remark- 
able absence of any and all carbonates in the mines where no 
limestone is found is a point worthy of special attention. 
In addition to the above-mentioned associated minerals 
barite should be referred to, for it is found in very small 
quantities here and there in many places. Occasionally just 
a small fragment of a crystal may be picked up from the ore 
