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Bureau of Mines / Minerals yearbook: Metals and minerals 1977
Year 1977, Volume 1 (1977)

Haines, Stanley K.
Vermiculite,   pp. 989-992 PDF (375.2 KB)


Page 991

VERMICULITE 
Table 3.—Vermiculite exfoliating plants in the United States in
1977
—Continued 
991 
company 
state 
County 
Nearest city 
MacArthurCo                   
Mica Pellets, Inc                 
Patterson VermiculiteCo            
Robinson InsulationCo             
Minnesota        
illinois          
SouthCarolina~ 
Montana        
North Dakota - - - - 
Ramsey         
DeKaib          
Laurens         
Cascade         
Ward           
St.PauL 
DeKaib. 
Lanford. 
GreatFalla 
Minot~ 
SchmelzerSalesAssociates,Inc        
TheScbundlerCo                
0. M. Scott  
Strong-LiteProducts              
SupremePerliteCo               
VermiculiteofHawali,Inc           
Vermiculite-Intermountain, Inc       
VermiculiteProducts, Inc           
Volite, Inc  
Florida          
NewJersey       
Ohio           
Arkansas        
Oregon         
Hawaii          
Utah           
Texas         do         
Hilisborough      
Middlesex        
Union          
Jefferson        
Multnomah       
Honolulu        
Salt Lake        
Harris          
Llano           
Tampa. 
Metuchen. 
Marysville. 
PineBluff. 
Portland. 
Honolulu. 
Salt Lake City. 
Houston. 
Llano. 
CONSUMPTION AND USES 
 The end-use pattern shifted substantially, through a large increase in loose-fill
insulation and a drop in premixes. The principal end-use categories were
insulation, 89% (up 10 percentage points); aggregate, 31°A~ (down
10 percentage points); agriculture, 28%; and miscellaneous, 2%. One explanation
for the increase in demand for loose-fill inslllation is that U.S. consumers
became convinced of 
the need to insulate their homes, causing an increase in demand for all forms
of home insulation. Some of the other insulating materials underwent a period
of tight supply, thereby throwing more business to the vermiculite industry.
Additionally, about 21,000 tons of crude vermiculite was consumed for various
end uses without exfoliation. 
PRICES 
 According to the Bureau of Mines canvass, the average value of domestic
crude vermiculite increased 12%, from $46.16 per ton in 1976 to $51.75 in
1977. The average value of exfoliated vermiculite increased $1.02 per ton
to $157.42 in 1977, f.o.b. mine or plant. 
 Engineering and Mining Journal quoted nominal yearend prices for crude vermiculite
as follows: Per short ton, f.o.b. mine, domestic crude, $48 to $~T5; c.i.f.
Atlantic ports, Republic of South Africa crude, $60 to $80. 
FOREIGN TRADE 
 Exports of crude vermiculite to Canada Mont. About 40,000 tons of crude
vermicuincreased to 45,000 tons in 1977. The ver- lite was imported duty
free from the Repubmiculite was shipped primarily from Libby, lic of South
Africa. 
WORLD REVIEW 
 Canada.—A total of 59,471. tonS of crude vermiculite was imported
in 1977, from the United States ~nd .the Republic of South Africa. The Provinces
receiving the most vermiculite were Quebec, 23,800 tons; Ontario, 15,000
tons; Alberta, 9,700 tons; Manitoba, 6,000 tons; and British Columbia, 4,500
tons. The end-use pattern for 1976 was as 
follows: Loose-fill insulation, 71.9%; horti-. culture, 8.8%; insulating
concrete, 7.3%; plaster, 2%; and other uses (including fireproofing and barbecue
base), 10%.2 
 Japan.—Production of crude vermiculite in Japan in 1977 was 15,000
tons, compared with 14,000 tons in 1976. The deposits are generally of lower
quality vermiculite. The 


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