Dictionary of Spanish Mining Terms - 1ORO1.COM

SPANISH MINING TERMS Och
NUSCO, Amazones, Peru, a mixture of oxide of iron and manganese
with foliated talc and quartz, containing gold the richest in mineral
and the easiest to work (Sir C. Mansfield), see panal de rosa.
oro, comp. higado (1),
NLJZCO, (1) Peru, small coal, see u. menudo ; (2) Hualgayoc, Peru, ore
spalled to the size of a walnut, see granado (3) and pachapampa.
N. Words with this letter will be found arranged alphabetically under N.
OBLICUO, UA, adj. oblique ; veta oblicua, a vein coursing obliquely
through a mountain.
OBRA, (1) work, see trabajo (1) ; o. de manos, hand-labour ; (2) mine
working, see labor (2), trabajo (2) ; obras de desfrute, workings on ore ;
obras muertas, dead workings or workings on dead rock, see faena
(2) ; see u. prestado, da ; (3) obras, Almaden, Sp. masses of solid
masonry, used for filling (Molina), see mamposteria (2), u. reservas (2) ;
(4) o. de fabrica, bridge, viaduct, culvert or other similar structure in
ways of communication (Acad.) ; (5) met. narrow and prismatic part
of a blast-furnace immediately above the crucible (Acad.), the "hearth."
OBRADOR, (1) workman (trabajador) ; mechanic ; (2) workshop,
machine-shop, see taller (1).
OBRADORA, (buena 6
(Dwight).
mala), Mex. rock that breaks well or badly
OBRAJERO, foreman, overseer, see capataz (3).
OBRERO, workman, day-labourer, see trabajador.
OBRIZO, ZA, adj. pure, refined, of high standard (of gold) ; obrizo is
sometimes used as a substantive, and is then synonymous
with oro
de ley, see ley (3), oro.
OBSIDIANA, obsidian or volcanic glass (vidro volcanico), syn. espejo
de los Incas ; it is the esponja (3) of the Incas (Humboldt), ixtete,
itztli or itztle, of the Aztecs, and tzinapu of the Tarascans (Orosco
y Berra) ; var. are o. azulada, o. dorada, o. negra, o. plateada or
argentina, o. roja or de Penjamo (much prized by the ancient
Mexicans, for fragments of it are found in their coesillos or tombs),
o. verde. Besides Navajas (see itztle), it is found near Tulancingo,
Mex. It occurs in trachyte formations generally ; pitchstone (piedra
pez) and pearlite are often associated with it, see pomez, u. riolita (1).
OBTURADOR, OBTURATRIZ, (1) mech. trap or plug ; o. para tubos,
tube plug or stopper ; see u. valvula ; (2) plate for collecting salt in
Paccard's system, see calorifero ; (3) o. c6nico, mech. mitre valve ;
o. neumatico, valve used for shutting off boiler for tube-collector in
case of cracking or breaking of tubes (invented by Naissant, and
applied by Remaux to hoisting engines).
OBTURAR, to stop or plug.
OCHAVA, eighth part of anything ; 1 ochava = 2 adarmes or 72 granos,
seemarco (I).
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