fibrolite

It contained within its chamber a hoard of 101 axes of fibrolite and jadeite, 50 pebbles of a kind of turquoise known as _callaïs_, pieces of pottery, flints, and a peculiarly fine celt of jadeite together with a flat ring-shaped club-head of the same stone.

Rough Stone Monuments and Their Builders 1908

The rock is therefore fibrolite schist, and from a lithological standpoint it is very interesting.

Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 307-428 James Stevenson 1864

The fibrolite imparts the toughness to the rock, which, I should judge, would increase its value for the purposes to which the Indians applied it.”

Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 307-428 James Stevenson 1864

“This rock, which was so extensively employed by the Pueblo Indians for the manufacture of various utensils, has proved to be composed largely of quartz, intermingled with which is a fine, fibrous, radiated substance, the optical properties of which demonstrate it to be fibrolite.

Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 307-428 James Stevenson 1864