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Fossilz

Crystal agate fossil?

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Fossilz

I found this today on the beach under a clay cliff, it is known for agate And chalcedony to be found on this beach, what would I call this, it looks like some sort of a bone maybe? 

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B95DC783-4959-43AC-8298-D5D8A1BED8F8.jpeg

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ynot

Agate.

Agate can form a botryoidal surface while growing. Sometimes there will be a separation along the layer lines. If convex, looking at the top side, if concave, then the underside.

Agate can make "limb casts", but I do not think that is the case here.

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abyssunder

It reminds me of Lithophysa . The conical radiating structures visible in the first picture look like biconoids / multiconoids.

 

Ore-cutts_Jan03.thumb.jpg.5a5f34e082f72061f7b2329764dba3ef.jpg

picture from here

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Fossilz

It looks pretty solid all the way through after cleaning It apart from the crystals that feel off while cleaning it, i will post some more angles to try help identify  

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Rockwood

I can imagine it being a geodized tabulate coral.

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ynot
12 hours ago, Fossilz said:

after cleaning It apart from the crystals that feel off while cleaning it,

Agate is a cryptocrystalline quartz. If the conditions of the deposition change - larger quartz crystals can form. These crystals are intergrown and misshapen.

That is what You have with the glassy fragments looking pieces. Where the individual quartz crystals have separated.

 

10 hours ago, Rockwood said:

I can imagine it being a geodized tabulate coral.

With no hollow inside? No septia? inconsistent size and shapes?

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Rockwood
5 hours ago, ynot said:

With no hollow inside? No septia? inconsistent size and shapes?

Well, I never said it was easy. :)

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