Eng. Stone bench on which lead ore is buckered or broken small for the
hotching tubs; Yorkshire lead mines. Also called binkstone. Arkell
Eng. Small refuse stones used for the inside of walls; Northamptonshire
and Worcestershire. Arkell
Microhardness determined from the resistance of metal to indentation by a
pyramidal diamond indenter, having edge angles of 172 degrees 30' and 130
degrees , and making a rhombohedral impression with one long and one short
diagonal. CF:Mohs scale
A small concretion; e.g., of galena in sandstone, or a segregation of
darker minerals in granite and gneiss. AGI
a. Nodules or concretions of pyrite.
b. Any hard inclusions in a rock.
c. Quarrymen's term for dark gray to black masses, more or less oval or
circular in cross section, which are segregations of biotite or hornblende
in granite. English quarrymen call them heathen.
d. Diamonds with included small diamond crystals that cause trouble in
cutting.
See:spotted slate
See:spotted slate
Land cannot be held to be a "known mine" unless at the time the rights of
the purchaser accrued, there was upon the ground an actual and open mine
that either had been worked or was capable of being worked.
A vein or lode is known to exist when it could be discovered by anyone
making a reasonable and fair inspection of the premises for the purpose of
a location.
A vein or lode is known to exist within the meaning of the mining act when
it could be discovered by or is obvious to anyone making a reasonable and
fair inspection of the premises for the purpose of making a location of a
placer mining claim. This term is not to be taken as synonymous with
located vein and refers to a vein or lode whose existence is known as
distinguished from one that has been appropriated by location. Hence, a
regular location is not necessary before a vein or lode can be a known
vein or lode. The time at which a vein or lode must be known to exist to
except it from a placer patent is the time at which the application for a
patent is made and to contain minerals in such quantity and quality as to
justify expenditure for the purpose of extracting them. Ricketts
A circular drill hole with two opposite vertical grooves that direct the
explosive power of the blast. Fay
A system of separating masses of rock by blasting with black blasting
powder in reamed drill holes, a considerable air space being left between
the charge and the stemming. Fay
See:copiapite
The place on an incline where there is a sudden change in grade. The top
of a grade or hill on a track over which mine cars are hauled. Fay
A mechanism consisting of some form of two forks coupled together by means
of a cube or sphere provided with projecting pins extending through holes
provided in the outer end of each branch of the fork. When inserted
between the bit and the drill rods, the mechanism can be used to deflect a
borehole. A similar mechanism often is used as a connection between two
shafts on a machine when the ends of the shafts are placed at an angle to
each other. Long
In bituminous coal mining, a person who works at the knuckle (top) of a
haulage slope, coupling trains of cars and attaching and detaching cars to
and from a haulage cable by which they are raised or lowered. Also called
knuckle boy. DOT
Eng. Two words always used together and applied to lumps of gypsum in
marl, Nottinghamshire. Arkell
The stony nodules found lodged in the strata; commonly harder than the
rest of the mass of the strata. Arkell
An amorphous mineral, (Y,U)(Ti,Nb)2 (O,OH)6 (?) ; forms
black metamict crystals at Kobe, Japan.
An orthorhombic mineral, Pb22 Cu4 (Bi,Sb)30 S (sub
69) ; forms a series with tintinaite.
A fossil resin, like amber. From Kochenthal, Tirol, Austria.
English