Greenstone

Greenstone is a name given to several different types of minerals and rocks.

• Pounamu, a form of green nephrite jade found in the South Island of New Zealand
• Chlorastrolite, found in the Keewenaw Peninsula of Michigan and Isle Royale
• Elvan, a quartz-porphyry found in Cornwall
• Greensand, glauconite bearing sandstone and a geologic formation in Great Britain
• Greenschist, metamorphosed mafic volcanic rock and a metamorphic facies
• Greenstone (archaeology), a type of stone used by early cultures, particularly in Mesoamerica

Greenstone may also be:

• Greenstone, Ontario, a municipality in Canada
• Greenstone (software), an open source digital library software package
• Greenstone River, river in the Otago/Southland region, New Zealand
  • Greenstone Track, tourist track along this river
• Greenstone, a song by Emma Paki

See also Greenstone belt.