Greenstone (disambiguation)
Encyclopedia
Greenstone is a name given to several different types of minerals and rocks.
Greenstone may also be:
See also Greenstone belt
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- Pounamu, a form of green nephrite jade found in the South Island of New Zealand
- ChlorastroliteChlorastroliteChlorastrolite also known as Michigan Greenstone, is a green or bluish green stone. Chlorastrolite has finely radiated or stellate masses that have a "turtleback" pattern. The stellate masses tend to be chatoyant, meaning they have a changeable luster. This chatoyancy can be subtranslucent to...
, found in the Keewenaw Peninsula of Michigan and Isle Royale - ElvanElvanElvan is a name used in Cornwall and Devon for the native varieties of quartz-porphyry. They are dispersed irregularly in the Upper Devonian series of rocks and some of them make very fine building stones...
, a quartz-porphyry found in Cornwall - GreensandGreensandGreensand or Green sand is either a sand or sandstone, which has a greenish color. This term is specifically applied to shallow marine sediment, that contains noticeable quantities of rounded greenish grains. These grains are called glauconies and consist of a mixture of mixed-layer clay...
, glauconite bearing sandstone and a geologic formation in Great Britain - GreenschistGreenschistGreenschist is a general field petrologic term applied to metamorphic or altered mafic volcanic rock. The term greenstone is sometimes used to refer to greenschist but can refer to other rock types too. The green is due to abundant green chlorite, actinolite and epidote minerals that dominate the...
, metamorphosed mafic volcanic rock and a metamorphic facies - Greenstone (archaeology)Greenstone (archaeology)Greenstone is a common generic term for valuable, green-hued minerals and metamorphosed igneous rocks and stones, that were used in the fashioning of hardstone carvings such as jewelry, statuettes, ritual tools, and various other artefacts in early cultures...
, a type of stone used by early cultures, particularly in Mesoamerica
Greenstone may also be:
- Greenstone, OntarioGreenstone, OntarioGreenstone is an amalgamated town in the Canadian province of Ontario. The area of the town is , stretching along Highway 11 from Lake Nipigon to Longlac; it is one of the largest incorporated towns in Canada....
, a town in Canada - Greenstone (software), an open source digital library software package
- Greenstone RiverGreenstone RiverThe Greenstone River is a river in the Otago Region of New Zealand. It arises as the McKellar Branch in the Ailsa Mountains and as the Pass Burn in the Thomson Mountains, and joins the Caples River to flow into upper Lake Wakatipu. It is probably named because greenstone was found in the area...
, river in the Otago/Southland region, New Zealand- Greenstone Track, tourist track along this river
See also Greenstone belt
Greenstone belt
Greenstone belts are zones of variably metamorphosed mafic to ultramafic volcanic sequences with associated sedimentary rocks that occur within Archaean and Proterozoic cratons between granite and gneiss bodies....
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