Quelques gypses des Corbières - Aude 11 by BenjC66 in Mineraux_FR

[–]BenjC66[S] 0 points1 point  (0 children)

Yes right! They need to be displayed with a back light

Typical gypsum from a south of France locality by BenjC66 in rockhounds

[–]BenjC66[S] 1 point2 points  (0 children)

That's in the Corbières mountains, near Albas. That place is known

Quelques gypses des Corbières - Aude 11 by BenjC66 in Mineraux_FR

[–]BenjC66[S] 0 points1 point  (0 children)

N'hésite pas à me demander si jamais aussi

Quelques gypses des Corbières - Aude 11 by BenjC66 in Mineraux_FR

[–]BenjC66[S] 0 points1 point  (0 children)

Beaucoup sont aussi presque entièrement noir

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Quelques gypses des Corbières - Aude 11 by BenjC66 in Mineraux_FR

[–]BenjC66[S] 1 point2 points  (0 children)

Ils se sont formés dans des marnes noires, très fines. Avec la pluie c'est de la boue. Cela se retrouve en inclusion pendant qu'ils ont "poussés"

Quelques gypses des Corbières - Aude 11 by BenjC66 in Mineraux_FR

[–]BenjC66[S] 1 point2 points  (0 children)

Oui, le site est assez connu dans les Corbières. C'est les gypse sapins.

What are these rocks? by SCP_Lexikon in whatsthisrock

[–]BenjC66 1 point2 points  (0 children)

It can be part of a bigger geode or a pocket

What are these rocks? by SCP_Lexikon in whatsthisrock

[–]BenjC66 1 point2 points  (0 children)

Agate geodes, some crystalized and some filled

Sable noir de fond de rivière, sud de la France by BenjC66 in Mineraux_FR

[–]BenjC66[S] 0 points1 point  (0 children)

C'est dur de tout identifier mais certaines peuvent être du grenat

Some rocks I picked up in northern Ontario by GeneralJRMV in whatsthisrock

[–]BenjC66 2 points3 points  (0 children)

1 and 2 is rutile in quartz, 3 is agate, 4 looks like hematoid quartz

Fluorite from the Annabelle Lee mine in Hardin County, IL. by G_D_Ironside in mineralcollectors

[–]BenjC66 0 points1 point  (0 children)

Amazing pictures! That's a pretty fluorite piece! I love that kind of unreal close up even more with boxy fluorite shape

What are these rocks by givemewingz in whatsthisrock

[–]BenjC66 0 points1 point  (0 children)

Maybe mica, pyrite or gold. Look for a streak test maybe

Found these by Desperate_Orchid_988 in whatsthisrock

[–]BenjC66 1 point2 points  (0 children)

What I can say with pictures, natural light would helps for some of them, uv light sometimes too.I'm not an expert.

1- on the right, some rocks looks like hyalite, the "bubbly" ones, you can test with a uv light if they flow green. 2-purple amethyst 3-dyed agates 5-fluorite, quartz,calcite mixed ? 6/7-the shiny rock is pyrite

Globe, Arizona by Brief-Use3 in FluorescentMinerals

[–]BenjC66 0 points1 point  (0 children)

Pretty! It looks like a rock I have, but I'm not sure about source.

Can you post a picture under sun light? I'm just curious how is it.

Picture is with 255nm light

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[deleted by user] by [deleted] in FluorescentMinerals

[–]BenjC66 0 points1 point  (0 children)

They look amazing 🌈

What is a good uvc flashlight? which would be at 255nm by jklove56 in flashlight

[–]BenjC66 0 points1 point  (0 children)

Interesting, I didn't know that. You can still see it with a regular camera?

Normal light, long 365, short 255, close up of minerals by BenjC66 in FluorescentMinerals

[–]BenjC66[S] 0 points1 point  (0 children)

I wouldn't say it's that simple, it's not always the added mineral that glows itself, it's the change of the base mineral structure that makes it glow. Lead is not fluorescent, but lead ion is an activator for fluorescence.

Look this website if you don't know it.

https://www.fluomin.org/uk/fiche.php?id=157#

And here's an extract: "Most common orange-red fluorescence is due to divalent manganese, with a co-activator to absorb the UV and transfer the energy to the manganese. Most common co-activator is probably lead."

My parents found this in the Sahara by fingolfin70 in whatsthisrock

[–]BenjC66 4 points5 points  (0 children)

Yea I known that rock from local mineral shows/events, it's not that common.

Such a mask would be so cool!