Ikjkel.] WEST VIRGINIA. 327 
Analysis of limestone from Pattersons Creek, West Virginia. 
Silica (Si0 2 ) 4. 96 
lAhnnina ( A1 2 3 ) 1 
Iron oxide (Fe 2 3 ) - / 
Lime carbonate (OaC0 3 ) 92. 44 
Magnesian carbonate (MgC0 3 ) 1. 40 
Water 52 
GREENBRIER LIMESTONE. 
As shown on the accompanying geological map the Greenbrier 
Mississippian or Lower Carboniferous) limestone is well developed 
in West Virginia, reaching its maximum thickness in its type area in 
Greenbrier County. At Manheim, on Cheat River, east of Grafton, 
this limestone is now used by the Buckhorn Portland Cement Company. 
Throughout its entire range the Greenbrier limestone is mainly a 
very pure nonmagnesian limestone, though occasionally shaly or mag- 
nesian beds occur. Because of its thickness, its favorable composi- 
tion, and its location with respect to fuel supplies and transportation 
routes, it is a very promising source of Portland cement material. 
Analyses of Greenbrier limestone, West Virginia. 
Silica (Si0 2 ) 
Alumina ( A1 2 3 ) 
Iron oxide (Fe 2 3 ).. 
I Lime carbonate 
(CaC0 3 ) 
I Magnesium carbon- 
ate (MgCO s ) 
Water 
1 
2 
.'{ 
4 
5 
6 
7 
8 
9 
io ! 
0.97 
19.87 
6.20 
1.88 
6.04 
0.40 
5.80 
27.00 
7.24 
6.00 
jl.46 
4.09 
1.20 
.56 
.88 
.48 
1.16 
.88 
2.52 
1.52 
96.46 
74.56 
89.92 
95.92 
89.44 
98.20 
89.76 
67.40 
88.32 
88.52 
1.11 
1.95 
Tr. 
Tr. 
2.80 

2.32 
2.32 

3.24 
n, d. 
n. d. 
.44 
.40 
.84 
.24 
.92 
.56 
.72 
.72 
26.96 
1.60 
64.00 
6.76 
I. Huddleston quarry, Snow Flake, Greenbrier County. J. B. Britton, analyst. Twentieth Ann. 
Re.pt. U. S. Geol. Survey, pt. 6, p. 460. 
, 2. Shavers Mountain, Randolph County. E. Whitfield, analyst. Bull. U. S. Geol. Survey No. 27, 
p. 74. 
3. Near Red Sulphur Springs, Monroe County. Rogers, "Geology of the Virginias," p. 396. 
4. Near Union, Monroe County. Rogers, "Geology of the Virginias," p. 397. 
5. Two miles south of Kingwood, Preston County. Rogers, " Geology of the Virginias," p. 398. 
6. Muddy Cre,ek Mountain, near Blue Sulphur Springs. Rogers, "Geology of the Virginias," p. 396. 
7,8. Cheat River, below Gum Camp Run, Preston County. Rogers, "Geology of the Virginias," 
p. 397. 
9. East side Laurel Hill, Monongalia County. Rogers, "Geology of the Virginias," p. 397. 
10. Front ridge, opposite Petersburg, Tucker County. Rogers, "Geology of the Virginias," p. 398. 
II. East side Briery Mountain, Preston County. Rogers, "Geology of the Virginias," p. 398. 
COAL MEASURES (PENNSTLVANIAN) LIMESTONES. 
As in Pennsylvania and Ohio, thin limestone beds occur at many 
horizons in the Coal Measures of West Virginia. These limestones 
are usually low in magnesia, but are also quite low in lime carbonate, 
commonly ranging from 80 to 90 per cent in that constituent. As 
