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Ch. 11: Amber, Malachite, Serpentine, Bowenite, Williamsite, ... Catlinite, etc.

Ch. 11: Amber, Malachite, Serpentine, Bowenite, Williamsite, ... Catlinite, etc. Page of 364 Ch. 11: Amber, Malachite, Serpentine, Bowenite, Williamsite, ... Catlinite, etc. Text size:minus plus Restore normal size   Mail page  Print this page
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GEMS AND PRECIOUS STONES IN THE
afford small gems that would compare favorably with the beauti­ful blue crystals from Brazil, which are so brilliant as to have been mistaken for diamonds.
When the lead mines at Ellenville, Ulster County, Ν. Υ., were worked in 1858, some remarkable flat ruby-red crystals of brookite were found on the quartz crystals ; and at Magnet Cove, Ark., brilliant crystals of the variety of this mineral known as arkansite are found in great profusion, at times transparent and of honey-yellow color. The mineral does not readily admit of polish, and hence has little use as a gem.
Compact titanic iron admits of a high polish, especially the porphyritic menaccanite from Cumberland, R. I., in which the included quartz crystals form a very pretty contrast with the deep black color of the polished titanic iron. It has been cut for ornaments to some extent by Edwin Passmore, of Hope, R. I., and resembles a dark black porphyry. At Magnet Cove, Ark., ilmenite or titanic iron is found in fine bright crystals, which take a brilliant polish and form natural ornaments of considerable beauty.
Titanite or sphene is met with abundantly in black and brown crystals in St. Lawrence and Orange Counties, Ν. Υ.
TITANITE (SPHENE)
Some remarkably fine crystals of titanite have been found at Bridgewater, Bucks County, Pa. Certain of these, over an inch long, and very transparent in parts, are of rich greenish-yellow and vitreous golden shades, equaling in color the finest from Tyrol, and would afford gems weighing from 10 to 20 carats each, that would show a play of colors rather adamantine than opalescent. Fine crystals from this locality are now in the cabinet of Clarence S. Bernent, the William S. Vaux Cabinet, Academy of Natural Sciences, Philadelphia, and the Peabody Museum, New Haven. Many yellow crystals over an inch long
Ch. 11: Amber, Malachite, Serpentine, Bowenite, Williamsite, ... Catlinite, etc. Page of 364 Ch. 11: Amber, Malachite, Serpentine, Bowenite, Williamsite, ... Catlinite, etc.
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