- 1546, and it has been
variously known as "black
silver ore" (German Schwarzgultigerz),
brittle silver-
ore (Sprödglanzerz), etc. The name
stephanite was...
-
American and
Eurasian plates were separated. As the rock of the
Ore Mountains was too
brittle to be folded, it
shattered into an
independent fault block which...
-
naturally occurs in
black to
steel or
silver-gray,
brown to reddish-brown, or red colors. It is
mined as an
important ore mineral of iron. It is electrically...
-
mineral consisting of
silver sulfantimonite, Ag3SbS3.
Known also as dark red
silver ore, ruby blende,
garnete blende or ruby
silver, it is an important...
-
mineral consisting of
silver sulf****nide, Ag3****3,
known also as ruby blende,
light red
silver, ****nic-
silver blende or ruby
silver ore, and an important...
- tons of
ore.
Average grade of the
silver-copper
ore has been 22.89
ounces per ton of
silver and 0.83% copper.
Average grade of the
silver-lead
ore has been...
- many
anastomosis stringers, so that the
ore is not
separable from the
country rock. One of the
largest silver lodes was the
Comstock Lode in Nevada, although...
- from
sphalerite (the
primary ore of zinc),
though germanium is also
recovered commercially from
silver, lead, and
copper ores.
Elemental germanium is used...
-
chemical element; it has
symbol Mn and
atomic number 25. It is a hard,
brittle,
silvery metal,
often found in
minerals in
combination with iron. Manganese...
- of lead(II)
sulfide (PbS). It is the most
important ore of lead and an
important source of
silver.
Galena is one of the most
abundant and
widely distributed...
