The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1877-08-08
KAoLIN.

1t is we'll to have various strings
in ones bow strings have a tendency
to snap, aud if you place your depend
euce upon one string. you may wake
up some morning to find your E string
busted, and your fiddle hung on will
low tree. How much better it is to
have harp Of a thousand strings, or
bow with various stout cords attach
ed thereto to fall back upon in case
of accident. Forest County has as
many strings as piano, and as many
and as clearly defined rings as Saturn.
However we didn't start out to talk
about strings, rings and things, but
merely to mention that another un-
developed source of wealth has been
discovered in Forest County in the |
shape of large deposit of KAoL1N
And what is Kaolin =? Esq. Irwin, come
forward and be sworn. "You do swear
by all the laws Of geological formations,
that the evidence you shall give in this
case shall be the truth, the whole truth,
and nothing but the truth, and that
your answers shall not extend back
farther than the Potsdam Period of
the Lower Silurian Era, Palezoic
Time"
IL do"
@. Mr.. Irwin, what is kaolin ?
A. Kaoln is variety Of clay used
for making porcelain and queensware,
proceeding from the decomposition Of
the mineral ieldspar.
@. Are porcelain and queensware
made from kaolin alone?
A. Porcelain is made of mixture
of kaolin and petunse. Queensware
is made Of kaolin and fire clay. Pc
tunse is fresh or undecomposed field.
spar it is grond fine and mixed with
the kaolin, to make porcelain.
@. Is kaolin ever found unmixed
with other substances
A. No, it is never found pure. 1t
always confirms from 80 to 80 per cent
of foreign matter.
@. How is the kaolin separated
from this foreign substance
A. Mostly by washing. Iron is
sometimes found in kaolin. This is
extracted by means Of horseshoe mag
nets.
c. What is the appearance of this
clay when found ?
A. 1t is Of whitish gray color, and
when FIRST dug is plastic and about the
consistency of putty, which it much re-
sembles. 1t hardens very rapidly
however, when exposed to the air, be
coming as hard as slate within al
. hour. The color varies sometimes tC
t IA ye!lowish white, and it is almost en-
!, tirely free from grit.
e @. Where is it found !?
r A. In fire clay, and not elsewhere
e In all good fire clay there is 10 to II
( psr cent. of ksolin.
@. What is the test applied to de
E termine whether or not the substanc,
o is really kaolin?
A. The test i0 70 dry piece anc
put it IL glass Of water, when, if it /
kaolin, it will emit a cracking sound
y. caused by the rising of the bubbles.
,. Q. What percentage Of kaolin in
!, given quantity Of the substance as duj
. would mako it valuable )?
\. twenty-five per cent Of pur
kaolin would make it valuable. Their
y is now in operation in Chester County
N this State, mine of kaolin, whic
" yields 25 per cent. and which was 70
" some years exported to England 70
&c the manufacture of porcelain.
" @. What is the thickness and ex
J" tent Of the vein recently found in TiC
. nesta
N A. The thickness of the vein
about one foot it is impossible to Civ
y, the extent, but believe it to exten
in over considerable territory. The pal
ce of the vein in which this kaolin va
I'd found, appears to be the lower edg
lis the vein running north. The strata
e. well defined.
IA Q. AT what distance from the su
V. face WIS Il fnnnd