Quantcast
  We are temporarily changing parts of Farlang until November 30th and apologize for any inconvenience Portal logo
Login/Register
 
/gemstones/kunz_gems_and_precious_stones/page_197 - 2
 

Ch. 10: Chiastolite, Cyanite, Datolite, Staurolite, ... Fluorite

Ch. 10: Chiastolite, Cyanite, Datolite, Staurolite, ... Fluorite Page of 364 Ch. 10: Chiastolite, Cyanite, Datolite, Staurolite, ... Fluorite Text size:minus plus Restore normal size   Mail page  Print this page
176
GEMS AND PRECIOUS STONES IN THE
Cyanites were found in the early part of the century at Ches­terfield, Mass., where some of the finest mineralogical specimens were obtained. An example of these, a mass measuring 10 to 6 inches, and consisting of distinct crystals over 3 inches long, piled one upon the other, is in the British Museum at South Kensington, in London. The crystals are all distinct, of a fine dark-blue color, and would cut into small mineralogical gems. At Darby Creek, Moon's Ferry, Delaware County, Pa., have been found deep azure-blue blades 5 and 6 inches long, which might afford gems if the mineral were thicker. Blue, green, and gray specimens are found at East Bradford, Chester County, Pa. Fine crystals occur with lazulite at Chubb's and Crowder's Mountains, on the road to Cooper's Gap, in Gaston County, N. C. At Windham, Me., cyanite has been observed in crystals 6 inches long. The old
CYANITE
localities are Worthington, Blandford, Westfield, and Lancaster, Mass.; Litchfield and Washington, Conn.; Strafford, Salisbury, and Bellows Falls, Vt.; near Wilmington, Del.; at Willis Mountain, Buckingham County; also two miles north of Chancel-lorsville, in Spottsylvania County, Va. The finest cyanite is found at Bakersville, N. C.,1 where it occurs in distinct isolated crystals that, for perfection, depth of color, and transparency, rival those from St. Gothard, Switzerland. They are found at an alti­tude of 5,500 feet, near the summit of Yellow Mountain, on the road to Marion, N. C, four miles southeast of Bakersville, in a vein of white massive quartz in a granitic bluff, associated with almandite garnet of a very light transparent pinkish-purple color. The vein has a dip of sixty degrees, bearing northeast and south­west. The color varies from almost colorless to deep azure-blue, as dark as the Ceylonese sapphire. Some of the crystals are
1 Am. J. Sci., III., Vol. 36, p. 224, Sept., 1888.
Ch. 10: Chiastolite, Cyanite, Datolite, Staurolite, ... Fluorite Page of 364 Ch. 10: Chiastolite, Cyanite, Datolite, Staurolite, ... Fluorite
Suggested Illustrations
Other Chapters you may find useful
Other Books on this topic
bullet Tag
This Page