60 University Geological Survey of Kansas. 
white tinge. Over the gypsum is a thin deposit of black, im- 
_ pure, shaly gypsum. 
In 1894 the company abandoned this quarry, and sank a shaft 
a quarter mile west of the quarry, 80 feet in depth, to the lower 
stratum, which is nearly 14 feet thick. The rock is white, 
though much of it is traversed by wavy dark lines which he 
close together, giving an appearance somewhat like granite or 
eneiss, so that plaster made from it is called by the company 
‘‘oranite cement plaster.’’ The lower part of the stratum is 
compact, and contains rounded crystals of selenite, with dark 
mottled surfaces. It thus bears a close resemblance to the 
Solomon gypsum, already described, although the crystals are 
usually large, averaging about two inches by one. These are 
the only two localities in this central area where the gypsum 
rock is used for plaster. 
A study of the levels and character of the rock indicates that 
the gypsum quarried below Solomon City is the same as that 
in the shaft near Hope. 
The gypsum in the quarry on the hill east of Hope lies 
below a buff, soft, shaly limestone, and this limestone accom- 
panies all the gypsum outcrops to the south and southeast 
—at the Henquenet cave, German church, Rhodes mill, Ban- 
ner City. The horizon is 100 feet above the Hope shaft rock. 
The levels and dip would connect this upper layer with the out- 
crop near Salina, which was named by Cragin” the ‘‘ Greeiey 
gypsum,’’ from the township in which it was found. He states 
that it was probably 100 feet higher than the Hope gypsum, 
but as two gypsum horizons occur at Hope it is doubtful to 
which one he refers. The level at the Salina gypsum is 1250 
feet, and along Gypsum creek, four miles east, is 1230 feet at 
the gypsum horizon, showing a dip of 4 feet west. The level 
at Hope quarry, 26 miles southeast of Salina locality, is 1400 
feet, making a dip of nearly 6 feet to the mile, which corre- 
sponds very nearly with the dip from Gypsum creek to Salina 
and to the dip of the gypsum throughout the central area. 
33. Colorado College Studies, Vol. VI, p. 10, 1896. 
