Fitxategi:Nephrite jade (Pounamu Ultramafics, Pounamu Ultramafic Belt, South Island, New Zealand) 3 (24069093093).jpg
Bereizmen handikoa ((3.804 × 2.996 pixel, fitxategiaren tamaina: 3,13 MB, MIME mota: image/jpeg))
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Fitxategi hau Wikimedia Commonsekoa da. Hango deskribapen orriko informazioa behean duzu. |
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Laburpena
| Deskribapena |
Nephrite jade from New Zealand. (public display, Montana Bureau of Mines and Geology Mineral Museum, Butte, Montana, USA) Nephrite jade (nephritite) is a crystalline-textured to felted-textured metamorphic rock principally composed of one or more amphibole minerals (tremolite to actinolite, Ca2Mg5Si8O22(OH)2 to Ca2(Mg,Fe)5Si8O22(OH)2). The gorgeous slice of green nephrite jade shown above is from New Zealand's South Island. New Zealand jade has long been collected as fluvial/alluvial clasts that were eroded from a segmented ophiolite called the Pounamu Ultramafic Belt. Ophiolites are fragments of oceanic lithosphere (basaltic crust + uppermost mantle) that have been metamorphosed and plastered onto the edges of continental lithospheric plates by obduction (the opposite of subduction). Pounamu nephrite jade has been interpreted as altered (tectonized) tremolite-rich rocks. Geologic unit: Pounamu Ultramafics Locality: unrecorded/undisclosed locality in the South Island of New Zealand (but very likely a fluvial or alluvial boulder ultimately derived from the the Pounamu Ultramafic Belt) |
| Data | |
| Jatorria | Nephrite jade (Pounamu Ultramafics, Pounamu Ultramafic Belt, South Island, New Zealand) 3 |
| Egilea | James St. John |
Lizentzia
- Askea zara:
- partekatzeko – lana kopiatzeko, banatzeko eta bidaltzeko
- birnahasteko – lana moldatzeko
- Ondorengo baldintzen pean:
- eskuduntza – Egiletza behar bezala aitortu behar duzu, lizentzia ikusteko esteka gehitu, eta ea aldaketak egin diren aipatu. Era egokian egin behar duzu hori guztia, baina inola ere ez egileak zure lana edo zure erabilera babesten duela irudikatuz.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/24069093093 (archive). It was reviewed on 2019ko azaroaren 30a by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
Fitxategiaren historia
Data/orduan klik egin fitxategiak orduan zuen itxura ikusteko.
| Data/Ordua | Iruditxoa | Neurriak | Erabiltzailea | Iruzkina | |
|---|---|---|---|---|---|
| oraingoa | 18:50, 30 azaroa 2019 | | 3.804 × 2.996 (3,13 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
Irudira dakarten loturak
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