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GLOSSARY <br />Albite A minenl of [he feldspar group <br />composed of sodium, aluminium and <br />silicon oxides. <br />Alluvial Deposited by the action of <br />running water in a stream. <br />Alteration Change in the mineralogy or <br />chemical composition of a rock. <br />Anomaly An area over which chemical <br />assay values or geophysical readings <br />are above or below normal values <br />Anticline Upward arching told of rock <br />layers. <br />Archaean The earlier part of the <br />Precambrian en prior to 2,500 million <br />years ago. <br />Anenopyrite An iron arsenic sulphide <br />minenl. <br />Auriferous Gold-bearing. <br />Banded Iron formation A rock <br />composed of layers of iron oxides and <br />chem. <br />Basalt Adark-coloured, tine gained <br />volcanic igneous rock. <br />Breccla Rock composed of rock <br />(ngments, or clasts, set in a (ine- <br />gnined matrix. <br />Calden A largq basin-shaped volcanic <br />depression. <br />Carbon-in-pulp (CIP), Carbon-lo-leach <br />(CIL) Methods of gold extraction from <br />cyanide solutions using carbon as a <br />precipitating agrnt. <br />Decline A sloping tunnel providing road <br />access from the surface to underground <br />mine operations <br />Dlp Tht angle at which a rock unit or <br />structure is inclined from the <br />horizontal. <br />Dolerlte An intrtuive igneous rock of <br />[he same composition a basalt. <br />Drive An underground tunnel which <br />follows the lode. <br />Dyke A tabular igneous intrusion which <br />cuts across the bedding in the <br />surrounding rock. <br />Epithermal Formed close to the earth's <br />surface (within 1000m1 by deposition <br />from hot wuers. <br />Fault A surface or zone of rock facture <br />along which [here has been <br />displacement. <br />Fe15ic Composed of light coloured <br />minerals such as quartz and feldspar. <br />FootwaH The mass of rock below- a <br />fault. vein, lode etc. <br />Freeze blasting A mining technique <br />involving the fragmentation of rock by <br />blasting without substantial movement <br />of the rock mass. <br />Gabbro A gnnulaz intrusive igneous <br />rock of [he same composition as <br />basal[. <br />Geochemistry A method of prospecting <br />which studies the variation of chemical <br />composition of rocks or soil. <br />Geophysics A method of prospecting <br />which utilises the varying physical <br />properties of rocks and minerals. <br />Gossan The oxidised outcrop of a <br />sulphide mineralised zone. <br />Granite Coarse-grained light-coloured <br />igneous rock containing quartz and <br />feldspar. <br />Gnnophyric A textural cerm applied to <br />rocks in which minerals are intergrown <br />with each other <br />g/t Grams per tonne; in this booklet <br />gams of gold in each tonne of rock. <br />Hangingwall The mass of rock above a <br />fault, vein, lode etc. <br />Neap leaching Eztnctton of gold from <br />heaps of mined rock by irrigating with <br />solutions such as p•anidr. <br />Hematite A common imn oxide minenl. <br />In Slru reserves Reserces calculated as <br />an undisturbed block of ore in the <br />ground. <br />laterite A layer of very highly a-eathered <br />rock rich in secondary oxides of iron. <br />aluminium and silica. <br />Lode A block of mineralisation. Syn. <br />orebod}', shoot. <br />Magnetic survey Systematic collection <br />of readings of the earth's magnetic <br />field at a series of locations in order to <br />define the disvibution of values which <br />may be indicative of different rock- <br />rypes, formations, ores etc. <br />Mineral A naturally occurring element or <br />chemical compound <br />Mineralisation A concentration of <br />valuable minerals. <br />Ore Rock from which a mineral, or <br />minerals, of economic value can be <br />extracted. <br />Ounce Troy ounce, equal to <br />approximately ;1 gams. <br />Oxidised ore Ore altered by surface <br />waters and air. <br />Porphyry An igneous rock in which a <br />tine-grained murix contains scauered <br />coarse-gained Qystals (or <br />phenocrysts). <br />Possible ore A block of mineralisation <br />adjacent to proved or probable ore <br />reserves, which possibly constitmes <br />ore, but is not sufficienti}' well defined <br />to be included N reserves. <br />Precambrian shield Continental core of <br />very old rocks. <br />Probable ore reserves Reserves where <br />ore will probably be found but its <br />extent and limiting conditions cannot <br />be as precisely defined as proved ore. <br />Proved ore reserves Reserves which <br />have been blocked out in three <br />dimensions by excavations or drilling. <br />Pyrite An iron sulphide minenl. <br />Pyrrhotite An iron sulphide minenl. <br />Recoverable reserves Reserves <br />calculated as the Ore expected ro be <br />delivered to the mill after mining. <br />Reef Agold-bearing vein. <br />Resource A block of mineralisation <br />which has not been evaluated in <br />sufficient detail to be classified as ore <br />Reverse clrculatioo drilling Rotary <br />drilling with the noa~ of compressed <br />air reversed up the drill rods « s allow <br />better collection of cuttings. <br />Sandsrone A sedimentary rock mainly <br />composed of sand-sized quartz gains. <br />Schist A strongly foliated rock formed by <br />metamorphism and which can be split <br />into thin flakes. <br />Seridte A white, tine-gained mica <br />occurring as an alteration product of <br />minerals rich in potassium and <br />aluminium. <br />Shale Afine-grained sedimentary ruck <br />composed of clay, sih or mud in thin <br />beds or layers. <br />Shear zone A tabular tune of rock that <br />has been crushed and broken up by <br />mam~ fnruures. <br />Shrink sloping An underground mining <br />technique involving upward sloping b}' <br />miners standing on already broken ore <br />h ennils holding most broken ore in <br />the scope until it is completed. <br />Stockwork Network of veinlets. <br />Sloping The ezrnnion of ore in an <br />underground mine by excavating <br />openings in a series of levels or steps. <br />Strike The direction or trend that a <br />structural surface {e.g. a bed) takes as it <br />intersects the horizontal. <br />Stntignphic sequence A chronological <br />succession of scdimentar}' rocks from <br />older below to counger above. <br />Tailings The residue remaining after ~ <br />extraction o(the valuable components i <br />from ore in a treatment plant. <br />tpa Tonnes per annum; in this booklet, <br />describing the production rate of a <br />mine or mill. <br />7hff Rock derived from volnnic ash. <br />Q'edge A drill hole commenced in and m <br />an angle to an existing hole. <br />All exploration projects described <br />in this booklet are managed b}• <br />WMC. <br />The information contained in this <br />bookie[ is based on information <br />compiled by employees of [he WMC <br />Group of Companies under the <br />supervision of hit Roy ~X'oodail A.O. <br />B.Sc. (Hons.), M.Sc., Hon. D.Sc. <br />(W.A.), FTS, Director of Exploration, <br />Western Mining Corporation <br />Limited, who has had 33 years' <br />experience in the milting industry. <br />Mr Woodall is a corporate member <br />of the Australasian Institute of <br />Mining and Metallurgy. This booklet <br />accurately reflects the information <br />compiled by the employees of the <br />WMC Group of Companies. <br />i, <br />7 <br />0 <br />0 <br />4 <br />z <br />C <br />x <br />C <br />z <br />m <br />32 <br />