:l.] 
MASSACHUSETTS-MICHIGAN. 
189 
PORTLAND-CEMENT RESOURCES OE MASSACHUSETTS. 
In the western part of Massachusetts extensive quarries are operated 
for both marble and lime. The stone quarried in this area is a highly 
crystalline limestone, or marble, of Cambro-Ordovician age. At many 
points this stone is highly magnesian, but the quarries located in the 
northwestern portion of the State, in Berkshire County, seem to pro- 
duce almost exclusively a low-magnesia rock. The analyses given 
below are fairly representative of this product. 
Unfortunately for the prospects of a Portland-cement industry in 
the State no shales occur near these limestones, while the glacial clays 
usually contain too much sand and pebbles to be worth considering as 
ement materials. This fact, taken in connection with the cost of fuel 
in this district, renders it improbable that Massachusetts will become 
i successful cement producer. 
Analyses of limestones from Massachusetts. 
Silica (Si0 2 ) 
Alumina ( Al 2 ( ) 3 ) 
ron oxide ( Fe 2 3 ) 
Lime carbonate (CaC0 3 ) 
Magnesium carbonate (MgC0 3 ) 
1. 
•J. 
3. 
0.69 
0. 31 
n. d. 
J . 06 
.23 
n. (1. 
93.86 
98.80 
99. 03 
5.34 
.37 
.27 
I. 
0. 63 
.55 
99. 60 
.49 
1. North Adams Marble Company, North Adams, Berkshire County. W. P. Mason, analyst. Twen- 
ieth Ann. Kept. U. S. Geol. Survey, pt. 6, ]>. IOC. 
2. Cheshire Manufacturing Company, Cheshire, Berkshire County. Davenport & Williams, analysts. 
bid., p. 410. 
3. C. H. Hastings's quarry, West Stockbridge, Berkshire County. J. B. Britton, analyst. Ibid., 
b. 411. 
4. Adams Marble Company, Renfrew, Berkshire County. E. E, Oleott, analyst. Ibid., p. 410. 
PORTLAND-CEMENT RESOURCES OF MICHIGAN. 
PORTLAND-CEMENT MATERIALS. 
Michigan now ranks third as a Portland-cement producer, being led 
Dnly by Pennsylvania and New Jersey, but closely followed by New 
f'ork. This high standing as a producer is due to the product of a 
umber of cement plants, most of them using a mixture of marl and 
llay, but ;i few utilizing pure limestone with clay or shale. 
The description of the cement resources and cement industry of 
Michigan, given in the following pages, is somewhat abridged from a 
report by Prof. I. C. Russell on The Portland Cement Industry in 
Michigan, published in the Twent3^-second Annual Report of the 
United States Geological Survey, part 8, pages 629-085. Reports on 
the cement materials of the State have also appeared in volume 8 of 
the Michigan Geological Survey. 
