W. EB. Hidden— Mineral Localities in North Carolina. 28 
of the uraninite masses had a submetallic luster, quite like mag- 
netite, and much of it was devoid of any pitchy appearance. 
Gummite,* uranotil and wranochre, occur at the above mines in 
considerable abundance; the three minerals are so intimately 
associated as to be inseparable, one specimen usually embraces 
them all. Pseudomorphs (cubes and octahedrons) after uraninite 
are quite common. A mass weighing six pounds six ounces, 
the largest yet discovered there, was found lately in the Flat 
Rock mine, which is partly unaltered uraninite. According 
to Dr. Genth,+ this North Carolina gummite is a mixture 
of uranic hydrate, uranotil, lead-uranate and barium-uranate. 
Some of this North Carolina gummite is very beautiful; it 
varies in the same specimen from a bright lemon-yellow to . 
deep orange-red and often has a core of velvet-black uraninite. 
ESCHYNITE (?),—A mineral much resembling this species 
occurs in deeply striated prisms embedded in feldspar at Ray’s 
mica mine. It is associated with apatite and beryl. It has 
not been analyzed. The crystals are large and well formed. 
Some groups of the crystals weigh a pound. 
SAMARSKITE.—Another locality of this mineral has lately 
been discovered in Mitchell County. It can now be obtained in 
masses of many pounds weight. Hundreds of pounds are now 
awaiting pitcbhears At the new deposit there is found asso- 
ciated with it a light brown, resinous-looking mineral of high 
specific gravity which may be massive hatchettolite, or a new 
plane between R and R in the —4 zone; also to certain in- 
verted (depressed) triangular markings like those on crystals 
* Locality discovered by Prof. Kerr in 1877; see this Journal, xiv, 496. 
a: Geol. N. C., Kerr, 1880, page 34; also American Chemical Journal, i, 87, 
$ Geol. N. C., Kerr, 1880, page 87. 
