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Author Topic: Jade slab?  (Read 2401 times)

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Talusman

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Jade slab?
« on: November 30, 2016, 09:45:14 AM »
First thought from the colors was jadeite, but specific gravity doesn't agree.

SG=3
Hardness between glass and Quartz

Does nephrite come in these colors?
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Enchantra

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Re: Jade slab?
« Reply #1 on: November 30, 2016, 11:58:10 AM »
At first I was thinking this was Quartzite with some manganese, chrome, or iron bearing mineral inclusions.
Then I saw the second picture...
Looks a lot like the Sillimanite that Lloyd is finding in BC. 
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southerly

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Re: Jade slab?
« Reply #2 on: December 21, 2016, 03:10:49 AM »
Not nephrite. Looks like a metamorphic mix though. My guess would be idocrase, but Enchantra may be on the money.

David
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bobby1

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Re: Jade slab?
« Reply #3 on: December 21, 2016, 11:37:22 AM »
Looks similar to Feather River Jade (Grossular Garnet) from the Feather River in Central California.
Bob
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