// Workers AI · dad joke modeWhat did the greenstone say? It's a rock-solid friend.

Greenstone may refer to:

Geology

• Greenstone (archaeology), various types of stone used by early cultures, covering jade and similar stones
• Greenstone belt, Archean and Proterozoic volcanic–sedimentary rock sequences
• Isle Royale greenstone Chlorastrolite, found in the Keweenaw Peninsula of Michigan and Isle Royale in the US
• Pounamu (New Zealand jade/greenstone), several types of hard and durable stone found in southern New Zealand
• Greensand (geology), glauconite bearing sandstone and a geologic formation in the UK
• Greenschist, metamorphosed mafic volcanic rock and a metamorphic facies
• Elvan, a quartz-porphyry found in Cornwall, UK

Places

• Greenstone, Ontario, a municipality in Canada
• Greenstone, Queensland, a locality in the Moreton Bay Region, Australia
• Greenstone Hill, a suburb of Johannesburg, South Africa
• Greenstone Point, a high rock spur along the north front of Jones Mountains, Antarctica
• Greenstone River, river in the Otago/Southland region, New Zealand

Other

• Greenstone (software), an open source digital library software package
• Greenstone Building, a Canadian government building in Yellowknife
• Greenstone Financial Services, an Australian insurance distributor
• Greenstone TV, a television production company, New Zealand
• Greenstone, the generics division of Pfizer

See also

• List of greenstone belts
• Marion Greenstone (1925–2005), American artist