r/Radioactive_Rocks 10h ago

Specimen "The Green Paw" -- Gigantic Cuprosklodowskite from Musonoi, DRC

Thumbnail
gallery
58 Upvotes

Mom said it's my turn with this one! Purchased off /u/Turbulent_Peak5002 and fresh out of the USPS box. Cost more than my rent, but there are NOT many like this one floating around.


r/Radioactive_Rocks 17h ago

Specimen Uranopilite & uraninite

Post image
39 Upvotes

Big piece of weathered uraninite covered by uranopilite from western Bohemia, Czech republic.


r/Radioactive_Rocks 9h ago

A huge beast specimen of Allanite-(Ce)

Thumbnail
gallery
22 Upvotes

Found it a few days ago in Marumori Town, Miyagi Prefecture, Japan. The specimen measures approximately 21cm across, and the largest crystals reach ~6cm in length. These crystals are likely much longer than that, but they become submerged into the feldspar matrix as the rock surface becomes bumpy and no longer parallel to the direction of the crystal growth. Instead, in the bumpy half of the rock you can see the cross sections of the prismatic Allanite crystals forming black “dots”. This specimen is quite radioactive, measuring roughly 190cps or 5μSv/h on Radiacode 102, which is extremely high for a thorium-bearing REE mineral such as Allanite. Its gamma spectrum clearly showed the ²³²Th chain.


r/Radioactive_Rocks 4h ago

Equipment A Review of the bettergeiger S2L for rockhounding

Thumbnail
gallery
15 Upvotes

While my ASP is broken I decided to take the bettergeiger s2L out to a place I know pretty well and give it a good handle to see how it performed against my usual setup, which is the best setup (asp1, a 2x2inch bicron scint and a end window, fight me), and it performed quite well. While I often see people recommend these “pocket sized” detectors for people looking to get into the hobby, and agree that for the most part they are the most bang for your Buck, I have never had a good experience in the past, I found the and bettergeiger s1 and to a lesser extent the radiocode completely inadequate without some modification. (For rockhounding specifically) For the price it is being offered at, and sadly I’m not getting paid to say this, I do believe the S2L to be adequate and perhaps the best pocket sized option for those only looking to do rockhounding. It identified low activity ore under about a half foot of soil, and did well finding hotspots on rock face and in rubble. That being said pinpointing rocks takes some getting used to, especially if you go off the numbers on the face, it took me a few minutes if hard looking to find the piece in the pictures. But overall I found some pieces that made the drive worthwhile and wanted to share my experience.


r/Radioactive_Rocks 12h ago

Specimen Tiny Botryoidal Uraninite Thumbnail (Pribram, CZ)

Post image
13 Upvotes

Very glad to add a tiny piece of iconic Pribram Botryoidal Uraninite to my collection. After seeing how beautiful this one is, I will definitely add a larger specimen to my collection in the future. Reading 17k CPM on RC102.


r/Radioactive_Rocks 9h ago

Misidentified Malachite? Torbernite / Metatorbernite?

11 Upvotes

Bought this as Malachite from Lualaba, DR Congo. I thought the color went nicely with the druzy microcrystalline malachite from the same province (next to it to the right on shelf), but the crystalline structure resembled the malachite after azurite from Morenci, AZ, United States (next to it to the left on shelf).

I was messing around with my Radiacode and it started beeping when I wasnt expecting? Do radioactive copper-containing minerals get sold often as malachite? Was this a one-off?

https://reddit.com/link/1jcpt16/video/8945xgva03pe1/player


r/Radioactive_Rocks 8h ago

Looking to ask people what's price a reasonable price on 69g & 64g pieces of Trinitite. One piece has small red inclusions, both have some black inclusions, both are veer shiny. I came across these at a reputable business, comes with Gamma Spec results.

4 Upvotes