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UNITED STATES, CANADA AND MEXICO
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155
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of the combination being very pleasing, although it does not admit of a high polish.
Vesuvianite
or idocrase that would yield small gems has been found at Phippsburgh,
Me. A beautiful wine-colored variety is mentioned as occurring near
Hope, Bucks County, Pa. About a mile and a half from Sanford, Me.,
idocrase occurs in unlimited quantities, one ledge, fully 30 feet wide,
being made up entirely of massive idocrase, associated with quartz and
occasionally with calcite, which fills the cavities containing the
crystals. Some of the crystals are 7 inches long, and occasionally the
smaller ones would afford fair gems. Idocrase is mentioned by Dr.
Frederic M.
VESUVIANITE
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Endlich
as occurring in large crystals on Mount Italia, Col., and north of the
Arkansas River, in granite. This mineral, which was named vesuvianite
by mineralogists, from the fact that it was first found in the lava at
Vesuvius, splendidly crystallized, is sold by Neapolitan jewlers, and
used to make the letters I and V in the manufacture of initial pieces
of jewelry, in which some word or sentiment is spelled out, the initial
of each letter being represented by a precious stone. Near Amity,
Orange County, N. Y., is found a dark yellowish-brown variety, which,
on the supposition of its being a new mineral, was named xanthite by
Doctor Thompson ; it has been found transparent enough to cut
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