Elmore bulletin. [volume] (Rocky Bar, Idaho) 1889-1906, 1890-10-11
MINING GLOSSARY.

feet:
Adit-A level. horizontal drift
or passage from the surface into
mine.
Bed--A horizontal seam or de-
posit of mineral.
Blende-An ore Of zinc, consisting
Of zinc and sulphur.
Breast-The face of a tunnel or
drift.
Cap--A vein is in the ''cap"
when it is much contracted.
Carbonates--Soft carbonates; salts
containing carbonates; the same
with iron for base.
Chlorides-A compound Of chic
rine and silver,
Cheek-the side or wall OF vein.
Chimneys-The richer spots ia
lodes as distinguished from poorer
ones.
Contact Vein-A vein along the
contact plane of, or between two dis
similar rock masses.
Country Rock-The rock masses
on each side of vein.
Course Of Vein-Along its length
(see ''strike")
Cribbing-A timber or plank lin
ing of shaft; the combining of a
wall.
Cropping Out-The raising OF
layers Of rock exposed at surface.
Crosse Cut--A level driven across
the course Of the vein.
Quito intersect a vein; open
cut, a level without a covering
driven across the course If the vein
Dip-The slope, pitch or angle
which vein makes with the plane
of the horizon.
Drift-A horizontal passage un-
derground.
Dump-A place of tailings oil
waste rock. also of ore.
Face-The end Of drift or tun
mel.
Fault-A displacement or break
of strata or veins SO that they are
not continuous.
Fceder-A small vein entering {
larger one.
Fissure Vein--A assure or crack
in the earth's crust filled with min
eral matter.
Float-Loose rock or isolated
masses Of ore detached from tn,
original formation.
Foot wall-The layer of rock i'm
mediately under the vein.
Galena-Lead ore, sulphur anc
lead
Gangue-The substance inclosinl
and accompanying the ore in vein
| Cash Vein--A vein wide abov,
and narrow below.
! Geode-A cavity studded rount
with crystals Of mineral matter; |
rounded stone containing such |
cavity.
/ Hanging Wall-The layer of rocl
or wall over lode.
Heading-The vein above tn
drift.
Horse--a mass of rock matte
occurring in or between the branches
Of vein.
| MISUNDERSTANDING down /
placer claim by the use Of hose O.
giant nozzle"
Inclined Drift--An inclined pas
sage underground.
Infiltration-The theory tina
vein filling was introduced as min
eralized water.
Injection-The theory that veir
filling is introduced by an igneou,
fluid and solidified.
In Place-A vein or lode Enclosed
on both sides by fixed and immov
able rock.
Lagging-The timber over ant
upon the sides Of a drift.
Level-A horizontal passa &c OF
drift into a mine from shaft.
Little Giant--A jointed iron noz
zle used in placer mining.
Lode-Aggregations of mineral
matter containing ores in assures
Matrix-The rock or earthly mat.
ter containing metallic ore.
Mill Run-A test of quantity
Of ore after reduction.
Outcrop--That portion Of weir
appearing at the surface.
Placer-A place gravely where
gold is found; includes all forms o.
mineral deposits excepting veins in
place. Section %, -, Revised
Statutes, United States.
Pocket-A rich spot in vein oil
deposit.
Rifle Blocks-Wooden blocks
set on end in a sluicc, with inter
stices for catching gold.
Selvage-Thin band of earthly
matter between the vein and walls
Shaft--A well like excavation in
the earth.
Shift-The time for a miners
work in one day or night.
Slickensides-Smooth polished
surface of walls caused by violent
trituration.
Sluices--Boxes Joined together,
set with rifle blocks, through which
is washed auriferous earth.
Stamps-Machincs for crushing
ores.