- glassy inclusion
- glazed
- glen
- globe-shaped
- globular texture
- globule
- gloss
- gloss coal
- gloss meter
- glossing agent
- glost firing
- glow plug
- glucamine
- glucopyranose
- glue
- glue putty
- glyceraldehyde
- glyceride
- glycerol
- glycerophosphoric
- glycidic
- glycol dehydrator
- glycolipid
- glyoxydiureide
- glyptal resin
- gmelinite
- gneissose structure
- general strike
- genesee oil
- geode
- geodesic line
- geographic point
- geometric symmetry
- geophysics equipment
- geothermal log
- germ nucleus
- germicide
- get
- getting
- ghost reflection
- gigantostraca
- gill
- given
- glacial cirque
- glacial erosion
- glacial ice
- glacial outwash
- glacial scratching
- glaciated knob
- glacier milk
- gladite
- glass beads
- glass marker
- glassy rock
- glauconitic sand
- gleam
- glide band
- gold amalgam
- gold amalgamation
- gold bullion
- gold chloride
- gold content
- gold cyanide
- globular form
- gold dust
- gold field
- gold flour
- glost
- glow
- glow discharge
- gold number
- glucaric
- glucosamine
- glucose
- glucoside
- glue boiler
- glue line
- gold salt
- gold trichloride
- gold-bearing
- glutaraldehyde
- glyceric
- glycerin
- glycerine
- glycerol tristeate
- glycerophosphate
- glycine
- glycolide
- glycyrrhizine
- golden electrode
- golden ocher
- gneiss
- gneissic structure
- gneissoid granite
- go-devil
- goaf stower
- gonardite
- goncalo alves
- gondola car
- gobbing machine