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APPENDIX. 
Feldspar, small fragments of beautiful pink and ruby colored Corundum. 
I have not however discovered any blue or gray Corundum in these rocks. 
This variety is probably Labradorite. 
The principal question, however, to be discussed touching this wonder- 
ful out-crop with its great variety of minerals is the main veins in which 
the great body of the Corundum occurs — for it evidently occurs in veins 
here. The manner of its distribution upon the surface and the minerals 
with which it is associated in mass give evidence of veins. These veins 
probably occupy subfissures in the Chrysolite rocks. This opinion is based 
upon the existence of Hornbleud, and yet another and in this geology 
unusual variety of Feldspar in connection with Corundum. This Feldspar 
I have classified as Couzeranite. The crystals are long and vertically 
striated, and generally of a grayish and yellowish gray color. There is 
also in this associated mass frequently Emerylite of afine quality. When 
split into moderately thin plates it is almost entirely transparent. I had 
a small pit dug while upon the grounds and found this vein stone or 
mass apparently in place only two or three feet below the surface. Here 
I found one mass sticking in the surface, principally Corundum, which I 
suppose will weigh nearly or quite five hundred pounds. All that I saw 
and turned over during one day’s exploration, I suppose would amount 
to two thousand pounds. There is abundant evidence of veins of this 
character at different points upon the out-crop. 
The difference in the associated minerals here and at the Culsagee 
mine, will at once suggest to the scientific reader a probable difference in 
the crystalline structure of the Corundum. There is a marked difference 
— a difference too that suggests, as I have already intimated, the probable 
existence of pseudomorphism at this locality. At Corundum Hill, (Cul- 
sagee mine,) the general form of the Corundum is tabular. These tabu- 
lar faces are striated both ways or at right angles. They appear to have 
been laid off’ with mathematical precision for an infinite number of small 
cubes. Cleavage is often obtained with great perfection following the 
lines of striation. There appears at the Culsagee locality a strong ten- 
dency in the Corundum to regular erystalization. Small hexagonal prisms 
are common, and even in the larger masses it is not uncommon to find 
two or three faces of a hexagon. One crystal having all the faces of a 
hexagon well defined, has been found, which approximates closely three 
hundred pounds in weight. The prevailing colors here are the Sapphire, 
Ruby and Gray — rarely opalescent in small crystals 
At the Buck creek locality the principal part of the Corundum is more 
massive in its structure, and when faces exist a general interlocking of 
them appears. This structure gives to these masses great toughness, and 
