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Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)

Minor nonmetals,   pp. 1051-1063 ff. PDF (1.8 MB)


Page 1051

Page 
1051 Staurolite___________________ 
1051 Strontium___________________ 
1051 Wollastonite      
- 1056 Zeolites                    1056 
Page 
1058 
1059 
1062 
1062 
  1051Minor Nonmetals By Staff, Section of Nonmetallic Minerals 
Asphalt____________________ Greensand                    
Meerschaum                 Quartz crystal                 
CONTENTS 
ASPHALT (NATIVE)1 
 Native asphalt was produced in 1978-79 by six companies in four States.
Leading States were Texas and Utah. Output increased 37% in 1978 to 1.7 million
tons and decreased 5% in 1979 to 1.6 million tons while value increased 39%
in 1978 to $19.3 million and 33% in 1979 to $25.6 million. 
 Bituminous limestone was produced by Whites Uvalde Mines and by Uvalde Rock
Asphalt Co. in Uvalde County, Tex.; by 
Southern Stone Co. in Colbert, Ala.; and by 
Barton County Rock Asphalt Co. in Barton 
County, Mo. The product was used mainly 
in street and road repair. 
 Gilsonite was produced by America~i Gilsonite Co. in Uinta County, Utah,
and by Ziegler Chemical and Mineral Corp. in Weber County, Utah. This material
was used for purposes other than road repair. 
GREENSAND2 
 Greensand (glauconite) was produced in 1978-79 only by the Inversand Co.,
a subsidiary of Hungerford and Terry Inc., near Clayton, N.J. Production
and sales information is withheld to avoid disclosing company proprietary
data. 
 Raw greensand produced by the company 
was sold for agricultural use as a soil conditioner. It contains both potassium
and phosphorus. Processed greensand was sold as a filter media for the removal
of manganese, iron, sulfide, and other elements from water. 
IODINE3 
 U.S. demand for crude iodine in 1978 and 1979 was satisfied in part by increased
domestic production and withdrawals from the surplus world supply accumulated
in prior years. By 1979, however, the iodine market was becoming unbalanced
with demand exceeding supply. During the 2-year 
period, the quoted price of crude product was raised five times, and reached
$4.54 per pound by yearend 1979. Faced with rising prices and the possibility
of shortages, U.S. chemical companies stockpiled iodine supplies in 1978
for consumption in 1979 and future years. 


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