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Liberty Project (Hall - Tonopah) - Technical Glossary

AA
Atomic absorption.
Alteration
Changes in the chemical or mineralogical composition of a rock by hot aqueous solutions.
ANFO
An explosive composition consisting of an oxidizing agent such as ammonium nitrate and a fuel material that may include a fuel oil and which also comprises a solid fuel such as rubber particles or polystyrene.
Apophyses
A small dike or sill injected from a larger intrusive body into adjacent rocks.
Aqua regia
A mixture of hydrochloric and nitric acids capable of dissolving many metals including gold.
Assay
An analysis to determine the proportions of metals or other valuable commodities in a sample.
Bedrock
Solid rock exposed at the surface of the Earth or overlain by unconsolidated material, weathered rock or soil.
Block model
Representation of a mineral deposit by a three dimensional array of blocks.
Chalcopyrite
A copper iron sulfide mineral.
Cm(s)
Centimeters.
Deposit
Natural occurrence of a useful mineral.
Diamond drilling
A type of rotary drilling in which bits containing diamonds are used as the rock-cutting tool and core is usually recovered.
Dike
A planar intrusion that cuts bedding or layering of the surrounding rocks.
FeMo
Ferromolybdenum.
g
Gram.
GPS
Global positioning system.
Grade
Relative quantity or the percentage of ore mineral or metal content in an orebody.
HDPE
High density polyethylene.
HQ
2.5 inches diameter drill core.
HQ core size
Drill core with a diameter of 2.5 inches.
km(s)
Kilometers.
K tonnes
A measure of weight equal to 1,000 tonnes.
km 2
Square kilometers.
kwh
Kilowatt hours.
lb or lbs
Pounds.
Lithologic
Adjective from ‘lithology’ – pertaining to rock.
M
Meter.
m 3
Cubic meter.
Magmatic
Of, pertaining to, or derived from naturally occurring molten rock material.
Mill
Equipment used to grind crushed rock to the desired size for mineral extraction.
Mineralization
The presence of minerals of possible economic value – and also the process by which concentration of economic minerals occurs.
Mm
Millimeters.
Mo
Molybdenum.
MoS 2
Molybdenite.
NQ
1.87 inches diameter drill core.
NQ size core
Drill core with a diameter of 1.87 inches.
Open pit
A large-scale hard-rock surface mine.
Ore
A mineral or aggregate of minerals which can be commercially mined at a profit.
Ounce or oz
Troy ounce (= 31.1035 grams).
Potassic Alteration
Rock characterized by potassium-feldspar minerals.
Pyrite
An iron sulfide mineral.
RC
Reverse circulation.
Rhyolite
Rhyolite is a type of lava.
SAG mill
Semi autogenous grinding mill.
Silicate
A compound whose crystal lattice contains the silicate tetrahedron.
Sill
An intrusion that is sheet-like and parallel to bedding or layering in the host rocks.
SX-EW
Solvent Extraction Electrowinning.
Tailings
The gangue and other refuse material resulting from the washing, concentration or treatment of ground ore.
TMO
Technical grade molybdenum oxide.
Toll
Royalty on minerals.
Toll Roasting
Roasting third party molybdenum concentrates.
Ton
A measure of weight equal to 2,000 pounds.
Tonne
A measure of weight equal to 1,000 kilograms or 2,204.6 lbs.
Tuff
Rock formed from volcanic ash.
UTM
Universal Transverse Mercator – a commonly used map projection system.
Vein
A tabular deposit of minerals occupying a fracture, in which particles may grow away from the walls towards the middle.
Imperial Measure
Metric Unit
Imperial Measure
Metric Unit
1 acre
= 0.4047 hectare
1 mile
= 1.6093 kilometers
1 foot
= 0.3048 meter
1 troy ounce
= 31.1035 grams
1 gram per metric tonne
= 0.0292 troy ounce/ short ton
1 square mile
= 2.59 square kilometers
1 short ton (2,000 pounds)
= 0.9072 tonne
1 hectare
= 100 square kilometers
1 tonne
= 1,000 kg or 2,204.6 pounds (lbs)
1 acre
= 2.47 1 hectares
1 hectare
= 10,000 square meters

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