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Gem and mineral site

Alaska jade (the Kobuk)

Nephrite jade (Alaska state gem)
Alaska jade (the Kobuk)
NPS Photo · Public domain · source

Jade is the state gem of Alaska, and the largest jade deposits in the United States are here, above the Arctic Circle in the Jade Mountains along the Kobuk River, where whole boulders of deep-green nephrite have tumbled into the drainages. The IƱupiat carved it for millennia. This is genuinely remote, roadless Arctic ground reached by bush plane; most people meet Alaska jade through the carvers and shops, but it comes from real mountains made of the stone.

What comes out of it

Nephrite jade (Alaska state gem)

Where it is

Alaska
See it on the map

Everything the map holds in Alaska →

The source

https://en.wikipedia.org/wiki/Kobuk_River

Nearby

This is remote ground. The closest other places on the map are a long way off.