42 TRANSACTIONS OF THE 
appear to be scattered through the territory covered by 
the Middle Jurassic strata. The copper has, in places, been 
subject to secondary concentration as is shown at the Cop- 
per Globe. At which place it has been redissolved by des- 
cending waters, carried through the cross-bedded sand- 
stone, and deposited at its base on a thin shale stratum, 
in sufficient quantities to work for a short period, and to 
keep up the hope of the locators. 
The manganese deposits east of Green River and south 
of Little Grande Station, have likewise received a second- 
ary concentration. This unlike the copper, has been concen- 
trated along a fault plane. They were worked for several 
years in a small way by the Colorado Fuel and Iron Co. 
Here also the deposits are too small and distributed over too 
much territory to be of much commercial value. 
The carnotite occurs in thin films along cracks in 
the sandstone. In the eastern portion of the district these 
films occasionally develop small pockets in which there is 
- from 50 to 60 per cent carnotite. 
Sulphur occurs very sparingly; in fact the only local- 
ity of which I know is in Sulphur Canyon north of the 
Cedar Mountain, Emery County. The gypsum, for the 
deposits are in the gypsiferous series, is coated with a 
thin film of this mineral for a distance of half a mile, 
which has apparently come up through an open fissure 
that still emits carbon dioxide gas. 
Lime occurs throughout this territory in thin beds, 
but is too impure to be of any commercial value. 
This leaves only the gypsum which is widespread and 
very abundant. It is found throughout the entire region. 
The purer beds are so far from the railroad that they could 
not compete with the deposits on the west side of the 
Wasatch Range. However, while at Green River recently, 
I heard considerable talk of their developing the deposits 
at that place. In time the many other deposits will be 
opened up as the transportation facilities reach out to the 
virgin territories. 
