Personal Narrative Of Travels To The Equinoctial Regions Of America During The Years 1799-1804 - Volume 3 - By Alexander Von Humboldt And Aime Bonpland.
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I Found No Traces Of This Grey Copper:
It Is Probably The Metalloid Diallage That Has Given The Cerro De
Guanabacoa The Reputation Of Riches In Gold And Silver Which It Has
Enjoyed For Ages.
In some places petroleum flows* from rents in the
serpentine.
(* Does there exist in the Bay of the Havannah any other
source of petroleum than that of Guanabacoa, or must it be admitted
that the betun liquido, which in 1508 was employed by Sebastian de
Ocampo for the caulking of ships, is dried up? That spring, however,
fixed the attention of Ocampo on the port of the Havannah, where he
gave it the name of Puerto de Carenas. It is said that abundant
springs of petroleum are also found in the eastern part of the island
(Manantialis de betun y chapapote) between Holguin and Mayari, and on
the coast of Santiago de Cuba.) Springs of water are frequent; they
contain a little sulphuretted hydrogen, and deposit oxide of iron. The
Baths of Bareto are agreeable, but of nearly the same temperature as
the atmosphere. The geologic constitution of this group of serpentine
rocks, from its insulated position, its veins, its connection with
syenite and the fact of its rising up across shell-formations, merits
particular attention. Feldspar with a basis of souda (compact
feldspar) forms, with diallage, the euphotide and serpentine; with
pyroxene, dolerite and basalt; and with garnet, eclogyte. These five
rocks, dispersed over the whole globe, charged with oxidulated and
titanious iron, are probably of similar origin.
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