THE LEOPARDITE OF NORTH CAROLINA 



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LOCATION AND OCCURRENCE. 



The leopardite is exposed in a number of small outcrops at Bel- 

 mont Springs, about one and a half miles east of Charlotte. Begin- 

 ning on top of the hill, several hundred yards above the spring the 

 rock is traced in outcrops over the surface for a distance of a quarter 

 to a half mile in a north 30° east direction. It forms a true dike, 

 intersecting a medium textured and colored, sheared and crushed. 



Fig. I.— View showing the spotted appearance of the rock on a surface broken 

 at right angles to the longer direction of the pencils. Photographed from a hand 

 specimen. (One-half natural size.) 



biotite granite; and, so far, as it was possible to determine, the dike 

 nowhere exceeds twenty-five feet in width, with a smaller average 

 cross-section. A small opening in one of the outcrops from which 

 some of the rock has been blasted reveals a sharp contact between 

 the quartz porphyry and the inclosing granite. 



MEGASCOPIC DESCRIPTION. 



The fresh rock is nearly white, tinged the faintest greenish in 

 places, and penetrated by long parallel streaks or pencils of a dead 



