— 69 — 
Coal, slaty. 2. 6 . 2. ww 0.05 \ 
Bituminous shale. . . .. . 0.61 
Coth ss 6 2. % ee % we ww 0.25 
Slate gray - 2. 2. 2. 2. . ss 0.05 
4, Coal, Bonito. . . ./Coal. 2. 2. 2 ww ew ee 0.10 2.18 
Slate, dark. . 2. . 6 «© « « 0.05 
COGL 5 ey ae Oe a, Oe 0.48 
Slate gray. . . . . ee 0,13 
WQOGL se Pe a oy Se 0.56 / 
The little coal, n. 2, comes immediately below the sandstone, and 
is present at all the openings around Minas. It contains much sulphur 
and other impurities. 
The 61 centimeters of bituminous shale at the top of the Bonito 
seam contains several thin layers of coal, but they are so interstra- 
tified wth slaty material that the coal in it is not available. The 
mine has been operated to a small extent for local useand the drift 
passes probably 40 to 50 meters under the hill. The coal occurs in 
layers of bright shining ordinary bituminous laminae 1/2 to 5 centi- 
meters in thickness, separated by dark bituminous slates of equal 
thickness, so that the fuel as mined is high in ash, and has a peculiar 
stratified appearance. Samples were taken for analysis, and the 
results will be given in another chapter of this report. Te elevation 
of the bottom of the coal at Bonito I is 241.5 meters abovesea level. 
A nearly vertical dike of diabase several meters in width cuts through 
the coal just west from Bonito I. 
Capoeira is about one kilometer due south from the railway 
terminus at Minas, and 3/4 kilometer south-east from the exploration 
at Bonito I. An entry has been driven into the Bonito bed at this 
locality for a few meters and the following section was measured 
there : 
1. Sandstone, massive, Upper Bonito. . . ......... 2.44 
COME oo! a, Be BE woe sae | 
2. Coal, Bonito Rider . .,Shale. . . ......° 0.04 0.42 
t coat br Bint Qodor ra S le 0.13) 
3. Clays, lightanddark. . . . . . .. . 6. eee ew es 0.91 
Shale, bituminous. . .... 0.61 
COdbie fo. te a hw IR Makes 0.38 
L Gee: Bonin; Shalez: «ww ww go % 0.10 2.05 
WOGGE = B Sas Be dete, Bete oe B 0.10 
Shale. . . 2. 2. 2. 6 0.10 
\Coal, with streaks of slate. . . 0.76 
