Page 353 - us_mineralresources1885

MANGANESE. 337 :

From an iuterestiijg article in the Engineering and Mining Journal,
by Mr. George S. Stone, the enginieer of the Is'^ew Jersey Zinc Company,
the following statement concerning these ores is condensed :
The zinc ores which carry manganese, and which are used in the
production of zinc at the New Jersey Zinc Company's works, are essen-
tially a mixture of willemite, franklinite, zincite, and calcite, from Ster-
ling and Franklin, Sussex county, New Jersey. The ore from the Ster-
ling Hill mine is principally franklinite and calcite, with a very variable
proportion of zincite and but very little silicate. The ore from the
front vein of the Taylor mine at Franklin also contains a good deal of
calcite with frankliaite, willemite, and rhodonite; it is low in zinc.
The ore from the back vein, or " Buckwheat Field opening," is the best
ore. It contains a large proportion of willemite and zincite, with but
little calcite. The following analyses show the composition of the ores

Analyses of zinc ores containing manganese, from New Jersey.

Gonatituents.