liAiN.] MINES AND PROSPECTS. 47 



The vein shows numerous slips and minor fault planes between the 

 main walls. These seem to represent post-mineral fracturing, though 

 the main facing mentioned above would more probably represent an 

 original foot wall, back of which fluorspar and calcite have metaso- 

 matically replaced the limestone. Within the vein the fluorspar 

 shows in great clear banded surfaces resembling onyx. If these rep- 

 resent replacement of the limestone instead of cavity filling, the mate- 

 rial has so completely recrystallized as to destroy all evidence of the 

 bedding. Running through the ore body are druses and channels 

 lined with crystals of fluorspar, calcite, and quartz. These are water 

 channels and seemingly carr}^ surface oxidizing waters, as is shown by 

 their action on the zinc and iron sulphides. The whole of the work- 

 ings are below water level, and approximate!}' 75 gallons per minute 

 are pumped in ordinary seasons. In wet weather this amount is 

 materially increased. 



Blue vein. — Northwest of the Rosiclare mine and on the property 

 of the Fairview Fluorspar Company is the Blue vein, one of the 

 first knowm in the district. Norwood describes it as 6 to 11 feet wide, 

 with a sharp dip to the east and a course N. 29° E. He also men- 

 tions a cross vein, about 100 yards to the west, with a course N. 35° E. 

 and a thickness of 3 feet. Neither of these veins has been worked 

 for some time, and at present the dump shows only fragments of 

 sandstone, shale, fluorspar, calcite, galena, and blende. The vein 

 took its name from the quantities of blue fluorspar found in it. 



Daisy vein. — A shaft on this vein was open at the time of Mr. Em- 

 mons's visit to the region, and he speaks of it as being 40 feet deep. 

 The vein is said to have been very productive, but the workings have 

 been abandoned for some years. At present fluorite may be seen on 

 the dump and in small bunches attached to the quartzite foot wall. 

 The vein has an apparent course N. 38° E. and a dip lo the north- 

 west of 69°. The hanging wall is apparently composed of shale, and 

 there are no fragments of limestone on the dump. These relations 

 suggest that the Daisy vein marks the position of the fault supposed 

 to cut off the Cypress sandstone from the Birdsville formation, and 

 to account for the absence of the Tribune limestone over most of the 

 area. 



A short distance northwest of the Daisy vein a fault is indicated 

 on the special map as marking the boundary between the Ste. Gene- 

 vieve limestone and the sandstone. There is no direct evidence of 

 faulting here, but the abrupt termination of the sandstone along a 

 sharp line is very suggestive of it. 



Clement vein. — I'his vein occurs along the contact of the Ste. Gene- 

 vieve limestone to the east and the higher Chester beds to the west. 

 There seems, however, to be but slight faulting. The vein has a 



