GLOSSARY. 159 



FLOAT-STONE A cellular quartz rock. The honeycomb quartz de 



tac-hed from a lode is often called float-stone by miners. 

 FLOAT GOLD Very fine gold dust which floats on running water. 

 FLOATING REEF Lumps of gold-bearing rock found in alluvial beds. 

 FLOOR A lode bent into a flat bed. 

 FLOURED MERCURY Mercury which is useless for amalgamation 



purposes, on account of its having a film on it caused by sulphur, 



arsenic, or some other substance. 

 FLOUR GOLD The finest gold dust. 

 FLUKAN A vein filled with a soft greasy clay crossing or running in 



or under a lode. 

 FLUME Apparatus (boxing or piping) used for conveying water from 



higher ground to alluvial gold diggings. 



FLUX A substance used to promote the fusion of metals in the reduc- 

 tion of ore. 



FOLIATED Arranged in leaf-like laminae (such as mica-schist). 

 FOOTWALL The underwall of a lode. 

 FOOTWAY Ladders by which miners descend or ascend the shafts of 



a mine. 

 FOSSIL Term applied to express the animal or vegetable remains 



found in rocks. 



FOSSILIFEROUS Containing fossils. 



FOSSIKING Same as " Crevicing." ~ 



FRAME A sloping board used in the washing of stream tin. 

 FREEZE (Assaying) (See Chap. IX., Cupelling). 

 FRESHET A flood or overflowing of a river caused by heavy rains or 



the melting of snow. 

 FRIABLE Easily powdered. 

 FULLER'S EARTH An unctuous clay (usually of a greenish-grey tint) ; 



compact yet friable. Used by fullers to absorb moisture. 

 FUSE In blasting, the fire is conveyed to the blasting agency by means 



of a prepared tape or cord called the fuse. 

 FUSIBLE That can be fused or melted. 

 FUSION Making liquid by heating. 



G. 



GABRO Name given to a particular kind of rock in which diallage 



predominates. 



GAD A steel wedge used in underground mining. 

 GALLERY A horizontal excavation in a mine. 

 GAMELLE (Brazil) Wooden bowl for ' panning out " gold. 

 GANGUE The non-metallic rock material in a lode. 

 GEM A precious stone. 

 GEYSER Eruptions of heated water. 

 GLACIER A body of ice which descends from the high to the low 



ground. 



GLANCE Literally, shining. Name applied to certain sulphides. 

 GLOBULE A small substance of a spherical shape. 



