EL. | 
NEVADA, NEW JERSEY. 
231 
NEVADA. 
I Nevada contains numerous areas of low-magnesia limestone, mostly 
If Carboniferous age, though pure limestones of later date also occur 
Irithin the State. The principal outcrops of the Carboniferous lime- 
Itones are in the eastern third of the State. Much of this material 
tfould be suitable for use in a Portland cement plant, if commercial 
londitions should justify the erection of such a plant. At present, 
flvith a scanty population, expensive fuel, and practically no local 
lemand for cement, it is evident that such an industry could hardly 
>c even moderately successful. 
The following analyses of limestones from different localities in 
Nevada will serve to indicate the character of the limestones above 
referred to. It will be noted that many of them, while low in mag- 
ics i a, are very siliceous. 
Analyses of Nevada limestones. 
ilica (Si0 2 ) 
tlumina (A1 2 3 ) 
ron oxide (Fe 2 3 ) .. 
auiv (CaO) 
Magnesia (MgO) 
UkaliH (K,0, Na 2 0) . 
arbon dioxide (C0 2 ) 
^ater 
l 
31. 51 
k 79 
34.33 
1.12 
n. d. 
27.77 
1.25 
20.99 1.35 
1.09 .36J 
39.7754.51 
2. 80 . 27 
tr. tr. 
32.80 43.13 
0.04 
.05 
n.d. 
55. 1<> 
.76 
.61 
4:5. 54 
1.06 .111 n.d. 
4. 5:; 
. ID 
51. 69 
1.04 
n. d. 
41. 75 
n.d. 
1.61 
M 
52. 16 
2.47 
n. d. 
43. 70 
n. d. 
7.38 
.80 
.68 
48.52 
2.46 
n.d. 
40.84 
n. d. 
31.12 
M 
35.82 
.86 
n.d. 
29.16 
2.10 
10 
12. 07 22. 00 
1.28 5. 14 
.57 2.04 
45. 29 37. 22 
1.86 1.89 
. 90 n. d. 
36. 23 28. 53 
2.65 3.32 
1. Limestone from Lower Coal Measures, Grand Peak, Nev. 
2. Limestone from Upper Coal Measures, Tenabo Peak. 
3. Carboniferous, Fremonts Pass. 
4. Triassie, between Pyramid Lake and Winnemucca Lake. 
:"). Triassie, Star Canyon. 
6. Triassie, Cottonwood Canyon. 
7. Miocene, Fossil Hill. 
8. Miocene, Valley Wells. 
9. Pliocene, Pine Valley. 
10. Recent, snore of Pyramid Lake. 
Analyst of Nos. 1-9, B.'E. Brewster, Fortieth Parallel Survey, vol. 2. 
Analyst of No. 10, T. M. Chatard, Bull. 168, U. S. G. S., p. 776. 
PORTLAND-CEMENT RESOURCES OF NEW JERSEY. 
PORTLAND-CEMENT MATERIALS." 
New Jersey at present ranks second in the production of Portland 
cement in the United States. This high rank is due to the amount 
manufactured by relatively few, but very large, cement plants. All 
of these plants, which are located in Warren County, employ the same 
« A very detailed description of the limestones of New Jersey available for use in Portland-cement 
manufacture, with maps showing their distribution and outcrops, is given in the Annual Report of 
the State (ieologist of New Jersey for 1900, pp. 1-101 . This valuable report lias been freely used in the 
preparation of the present sketch, and many of the details regarding the formations are stated in 
Doctor Rummers words. 
