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Quartz to diamonds.

Authors
Austin-GT
Source
Colored Stone 1992 Jan; 5(3):26-27
Link
NIOSHTIC No.
10011606
Abstract
Since the U.S. Bureau of Mines expanded its survey of gemstone producers in 1986, Arkansas has ranked as high as second in the value of gemstones produced, a ranking that it enjoyed in 1989 and 1990, and as low as fifth in 1991. The remaining 3 years, 1986, 1987, and 1988 the state ranked fourth. Over the years, Arkansas and quartz have been synonymous. Not only is Arkansas the major producer of gemstone and decorative quartz, but it is the only producer of "lacas," the feed material used to make synthetic quartz.
Publication Date
19920101
Document Type
OP; Journal Article
Fiscal Year
1992
NTIS Accession No.
NTIS Price
Identifying No.
OP 255-92
Issue of Publication
3
ISSN
1046-462X
NIOSH Division
WO
Source Name
Colored Stone
State
AR; DC
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