NEW YORK ACADEMY OF SCIENCES. 137 
1889. ] 
result was that I discovered the lodes of ‘‘ greisen”’ which have 
proved to be the matrix of the tin of that region, and which are 
found to occur there in a body of micaceous slate about one mile 
in width, extending from the granite on the west across to the 
limestone formation on the east. 
> 
f 
— at ees 
TH CAROLYNA 
CT. 
Greisen with 
\\ 
\ 
hin: 
ae 
~— 
& 
a 
- 
S 
tene 
Its. 
be 
imes 
a 
Teas Te 
’ 
L 
wotenne on eet 
Fic. 1.—Map of the tin-bearing formation of North and South Carolina, 
A, Anderson Mt.; P, Pasour Mt.; K, King’s Mt.; C, Crowder’s Mt. 
1, Black’s Station, S. C.; 2, Grover Station, N. C.; 3, King’s Mt. Station; 4, Gastonia. 
The flag marks the locality of the old battlefield. 
. 1) the belt marked @ T'is only intended 
a-slate area in which lodes of greisen with 
On the map (Fig 
to represent the mic 
tin occur. 
ation extends from near Black’s Station in 
This form 
