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336 MINERAL RESOURCES.

separate it IVoiii the rich manganese in the "buttons." The matrix

splits up into rusty slabs 2 to 4 or 5 inches thick. This ore has but little
commercial value. An average analysis of this deposit is as follows

Average analysis of Batesville (Arkansas) " hutton" manganese ore.

Percent.

Metallic manganese 16.46
Metallic iron 8.70
Phosphorus .60
Insoluble matter 43.65

'Southwestern Arkansas.—But little has been learned as to the de-
posits of manganese ores in this section. They are reported as cover-
ing a large extent of territory northwestward from Nash ville, and show-
ing both true veins and pockets. The distance of the deposits from
railroads have so far interfered with their development. The only
analyses obtainable of ores from this region were made with a view
to chemical manufacture, and are as follows :

Analyses of southwestern Arkansas manganese ores.

Xo.l. N"o. 2.

Per cent. Per cent.
Protoxide of manganese . 84. 995 82. 448
Oxygen 10. 482 10. 002
Silica 2.845 5.329
Baryta .512 .282
Lime , Trace. 1.178
Magnesia Trace.
Water 1. 820 .611

KEVT JERSEY.

In the Triassic rock near Clinton, Hunterdon county, there has beijn
an opening made, at first for iron ore, but it proved to contain ores with
a large percentage of oxides of manganese, partly pyrolusite and partly
braunite. The sample analyzed contained 47 per cent, metallic man-
ganese, 7 per cent, peroxide of iron, and about 25 per cent, insoluble
matter. The ore was tried in blast furnaces, and hopes were enter-
tained of making it valuable in the manufacture of spiegel iron, but
these have not been realized.
Though, strictly speaking, there are no manganese ores mined in New

Jersey, the zinc ores of Sussex county, which are mined for the zinc,
contain considerable manganese. The residuum from working them for
the zinc would, of course, contain more manganese per ton than the
ore itself, and this is smelted in blast furnaces for spiegel iron.
This zinc residuum is worked by the New Jersey Iron and Zinc Com-
pany at Newark and the Passaic Zinc Company in Hudson county.
When first made this spiegel iron was known as " franklinite iron,*'
after one of the ores used in its manufacture.