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UNITED STATES, CANADA AND MEXICO
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189
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limited
extent in jewelry for charms and other ornaments. It is usually of a
more pleasing color than jade, and varies from a dark green to light
apple-green and emerald-green shades. William-site is one of the
handsomest known opaque or transparent stones, rivaling in richness
many of the varieties of green jade. The grayish-green serpentinous
substance found at Pelham, Mass., named pelhamine by Prof. Charles U.
Shepard, admits of a very good polish, which produces a curious effect.
'
Microlite
has been found at the Allen Mica Mines, in Amelia Court House, Amelia
County, Va., in beautiful crystals, some of which weigh 4 pounds each,
but are opaque. The finest of these,
MICROLITE
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a
transparent specimen, is in the cabinet of Clarence S. Bernent ; it is
about 3/8 of an inch long, and in part a rich honey-yellow, having all
the color of topazolite, with a higher lustre. Some crystals are of
sufficient transparency to afford gems ranging in color from an
essonite-red to a rich spinel-yellow and are of remarkable brilliancy.
Microlite has the highest specific gravity of any known gem, being
about 6.1
Meerschaum, or sepiolite, has occasionally been met with in compact masses of smooth, earthy texture in the serpentine quar-
1 See A Transparent Crystal of Microlite, by William E, Hidden, Am. J. Sci. III., Vol. 30, p. 82, July, 1885.
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