Quantcast
  We apologize for any slow response. This will be fixed before October 31st Portal logo
Login/Register
Bactrian Gold Treasure from Afghanistan, coming soon....
/gemstones/kunz_gems_and_precious_stones/page_200 - 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
UNITED STATES, CANADA AND MEXICO                            179
like translucency, and become white and somewhat earthy in appearance, and exhibit the crypto-fibrous structure with more distinctness. Specimens cut and polished across the end of a slab-like mass show on one side a narrow selvage of breccia made up of fragments of the pectolite and of a dark-colored rock, mixed and firmly cemented together. On the opposite side or border of the mass, there are distinctly-formed parallel planes of concen­tric layering, from the surfaces of which the fibres diverge. These layers and the breccilated border opposite show the vein-like
PECTOLITE
formation of the mass between walls. Its hardness is from 6 to 6.5. It may be found useful as an ornamental stone for making small objects, cups, plates, handles, or for carving figures, or inlaid work." This is identical with the pectolite from Alaska, described by Prof. Frank W. Clarke. (See Jade, Chapter on Mexico.)
Dioptase was first described by R. C. Hills as being found in the United States at the Bon Ton group of mines, about sev­enty miles from Clifton, Ariz., where it occurs in brilliant green
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