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Author Topic: Metamorphosed basalt pendant  (Read 305 times)

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lithicbeads

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Metamorphosed basalt pendant
« on: November 01, 2018, 09:19:48 AM »

Off the beach!
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VegasJames

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Re: Metamorphosed basalt pendant
« Reply #1 on: November 01, 2018, 09:20:57 AM »

Nice looking material. Would make nice knife scales.
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Rustycat

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Re: Metamorphosed basalt pendant
« Reply #2 on: November 01, 2018, 12:43:10 PM »

Off the beach!
Very inspiring, thanks for the post.
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Kaljaia

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Re: Metamorphosed basalt pendant
« Reply #3 on: November 01, 2018, 12:44:10 PM »

Eye-catching shape on that one. Would that have originated as a fine-holed vesicular basalt with quartz fill?
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- Erika

I rock hunt in the Antelope/Ashwood area of the John Day river basin in Oregon. 90% of what I post is from this area, from private property where I have permission to hike and collect. The material I find is for personal use only, I do not have landowner permission to sell. Thanks for understanding!

lithicbeads

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Re: Metamorphosed basalt pendant
« Reply #4 on: November 01, 2018, 01:11:46 PM »

Most of the veshicular basalt out here has a mix of feldspars  or zeolites. When metamorphosed the contents of the vugs  change and often this means a volumetric change  overfilling and streatching the vug and leaving it empty to an extent. this is really obvious if  the rock was metamorphosed to the point that epidote formed in the vugs ( assuming enough iron is present).Epidote cfan overwhealm the vugs and 9in the case of greenschists you can't tell there were vugs there as the epidote runs ramp-ant and covers about half the rock.
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southerly

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Re: Metamorphosed basalt pendant
« Reply #5 on: November 01, 2018, 08:32:24 PM »

Very cool Frank, you do such a good job of showing how cool rock can be.

David
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Orrum

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Re: Metamorphosed basalt pendant
« Reply #6 on: November 02, 2018, 06:37:12 AM »

Now that's cool!
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hummingbirdstones

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Re: Metamorphosed basalt pendant
« Reply #7 on: November 02, 2018, 06:44:43 AM »

Excellent pendant, Frank!  Love the shape on that one as well as the cord knotting.

Thanks for the explanation on the metamorphosed basalt.  I always learn something from your posts.
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Robin
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