Document 2R6ma2JeoBvy4awmGrOMgnoaa
FILE NAME Talc TALC DATE 1973 Aug 31
DOC TALC454
DOCUMENT DESCRIPTION Memo - Differences between NY State
Talcs Used by Different Companies
Manville .
Internal Corresponde
.
F. J. Solon ~ 4 North
- Date
August 31 1973
R. S. Lamar D Center L
See below
an
AMONG DESERTALC 1 G VANDERBILT AND
DIFFERENCES
NEW YORK
STATE
TALCS
PER
YOUR REQUEST :
INTERNATIONAL |
OF AUGUST 30 1973
two distinct grades of
Desert Minerals mines
These form the base
in Warm Sprist Canyon
of our present talc business
crude talc ore
for the bulk
cent tremolite and no detectab
G are
contains 30 to 35 per
the usual petrographic
and cent
ray diffraction tremolite and
chrysotile by
5 to 10 per
methods G ore contains
usual methods of ana-
again no detectable chrysotile by the
lysis
The New York State.talcs State.talcs produceadrebcyonb siodt erh Ra.blT.y Vhaingdheerrbiilnt
and
International
Talc
Company
50
to
70
per
cent and
contain
tremolite
to
as
much
amounts
of
chrysotile
For
some
example
in addition significant
thermal analyses
DTA
tests on some samples
is the fibrous varie
dsihfowferneontthiianlg but serpentine chrysotile between the fibrou
of
serpentine-
DTA does
not
distinguish transmission
electron micro-
and fibrous varieties but
of much chryso the presence
graphs of these products confirm
tile
These are the major differences among these products
R. S. LAMAR
IS
CC W. L. P. A. J. M. H. R. R. P. G. E.
VanDerbeek Martinson Sharratt
Keefe Carter Parker
_
- 2 West - 2 West 2 West FON 2 West ~ 5 West -~ 5 West
C. F. L. Pundsack H D Center - D Center
S. Speil
W. Streib ~- D Center