GREGORY.] 
CALCIFEROUS SANDSTONE. 
139 
Sweden Township, as this is the most highly calcareous and micaceous 
of all the specimens of this type collected: 
Analysis of calciferous sandstone. 
Constituent. 
Si0 2 
ALA 
Fe 2 3 .... 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 O-105° 
H 2 O+105° 
Ti0 2 
Zr0 2 
Cr 2 3 
iVr criil. 
54. 23 
7.38 
.54 
1.37 
3. 29 
14. 56 
1.65 
1.74 
.25 
1.22 
.28 
? 
v 
Constituent, 
v 2 o 3 
MO. 
MnO 
BaO. 
SrO . 
Li 2 0. 
p 2 o 5 - 
co 2 . 
CI... 
Fl... 
FeS 2 . 
Per cent. 
None. 
Not est. 
None. 
None. 
'I 1 race. 
.07 
13.48 
? 
? 
? 
100.06 
The mineral components were calculated from this analysis and gave 
the following- approximate composition: 
Mineral. 
Per cent. 
Mineral. 
Per cent. 
Calcite 
52.0 
18.0 
13.7 
6.9 
4.0 
Siderite 
Kaolin 
2.1 
2.8 
. 5 
Quartz . . 
Alkali feldspar 
Magnesite 
Hematite 
100.0 
Muscovite 
LIMESTONES. 
Limestones are by far the most abundant and most widely distrib- 
uted rocks of northeast Maine. They never occur as undisturbed 
beds, but are everywhere folded and slated and in places are brecciated 
to an extreme degree. Thick beds are rare, and generally the lime- 
stones are thin and uneven in bedding and int< rstratified with sandier 
materials, indicating the deposition of calcareous muds under the 
changeable conditions found near shore. Different specimens show 
considerable variation in the amount of material other than calcite 
present, and a series could be selected showing all gradations from 
the calciferous sandstone described above to the white fossiUferous 
limestone. 
