3.4" Blue Chalcedony Pseudomorph After Anhydrite - Peru

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3.4" Blue Chalcedony Pseudomorph After Anhydrite - Peru

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Natural Azurite pseudomorph, Kamenushinskoe Cu deposit, Salairsky mine, Guryevsky area, Kemerovo Oblast, Russia
Photo: @South_Siberian_Minerals
Pseudomorph Tube Agate
Like little memory chambers in the brain. It's a marvelous pattern.
Nice Laguna half showing classic concentric banding in rich red-orange to salmon tones with crisp white separators. The fortification pattern flows beautifully around a darker eye formation on the left side. Clean polish reveals excellent translucency throughout the bands 🔥
My favorite rock out of my (tiny) rock collection is a malachite sample. I would commit many crimes for a chunk of azurite though! Do you have any samples of either?
Here is my best malachite!
This piece is a pseudomorph, or "false form," a mineral taking the shape of a different mineral!
It started out as a cluster of azurite crystals. Over time, the azurite turned into malachite! This is something that can happen to azurite which is exposed to the air over long periods of time. It's not very chemically stable, and it reacts with moisture in the air to become the much more stable malachite - which chemically speaking is pretty much the exact same mineral but with way more hydrogen molecules. The malachite replaced the azurite perfectly, even preserving the exact shape of its crystals! Isn't that cool?!
As for azurite, this big sparkly specimen is my best piece of that!

Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
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Day 12: Inky
I acknowledge this is ridiculous:p
For @montereybayaquarium 's Deep Sea December
Quartz, iridescent rainbow pyrite, calcite pseudomorph after fluorite, Nikolaerskiy mine, Dalnegorsk, Russia 2.75 inch. See video and details here
https://etsy.me/42cDZkQ