= Of —_ 
The following section was measured at the mouth of theaban- 
doned mine at Barro Branco Novo: 
Meters 
1. Sandstone, Uppér Barro Branco. i eee ce SP Cats pines Co 
Me BNO ae OS. Se A CR ca OE MS ce SS a ale Oe, 2 te. OOS 
Bo COREY SUBIB a? Se ose gt en ee. ee cay Ge Cs ee Se 0.08 
4, Shale, gray. . . 
Sash aye Ge eh og) ae aS et ee te «=O 
Coal, fairly good. . . . ..., 0.33 
Clay,dark. . . ...... 0.13 
Coal, slaty. . . . Se te 0.10 
5. Cool Barro Branco. / Clay, gray with streaks of bitum- 1.91 
. inousshale. . . ay ee oe 0.33 
Clay,light colored . .. . . 0.41 
Coal, with 10 centimeters clay Bai 
ting near center, visible. . . . 0.61 
Elevation of coal, 266 meters. 
This section shows practically one meter of available coal, and 
it is reported to have thickned up some in the mine which was 
filled with water, and could not be entered at the time of our 
visit. The best coal, however, n.2at the top, it is said, was not 
taken down at all. This mine is near the head of a small brook 
‘which empties into Rio Ponte Alta. Analyses of the Barro Branco 
coal at this, and other localities will be given in another portion of 
this report. 
About one kilometer south-west from Barro Branco Novo, is 
Barro Branco Velho where the coal was first exploited. This is 
also on a tributary of Rio Ponte Alta, and the mouth of the mine is 
just above water level. A considerable quantity of coal has been 
mined there for local use, and for shipment assamples of the fuel. 
The section at the mouth of the mine reveals the following 
succession : 
Meters 
1, Sandstone, grayish-white, Upper Barro Branco. . . . . . © 9.14 
2. Shales, dark, bituminous. . . . «© - 2+ «© «© © «© «© © © © 0.18 
3. Coaly layer. . 2. 2 6 w 6 © 6 8 © ee eh we es 0.05 
4, Clay, light colored. 2. 2. 2 56 2 6 ee ee we ew 0.15 
COG oe) eee ahha RR. HOE) Gl ce Ce BGS 0.33 
Shale, dark. 2. 1 1 ee 1 ee ee ee 0.10 
Clay, light: 6 00% w Sow oe wR we 0.11 
Be COU oad oc. oa: 3 Ook aks ewe, Gite Fe it 
Clay, dark and light . ane ks eS We OY AS se “Se 0.69 
Coal, with clay parting near center. . . .. . 0.63 
