Lapidaryforum.net

Let's Rock => Identifications of Materials => Topic started by: WingnutAndAPrayer on February 10, 2025, 07:21:34 AM

Title: Red and Black Botryoidal?
Post by: WingnutAndAPrayer on February 10, 2025, 07:21:34 AM

Acquired from a collection hosting domestic varieties, pucked prior to 1990. It was put out the same time as a large clutch of Ellensburg nodules and has the same style cortex. I haven't been able to ID it from any examples of Eburg or Red Top. Any guesses would be welcome- I'd rather not slice into it unless I know I can find another.

Title: Re: Red and Black Botryoidal?
Post by: Phishisgroovin on February 10, 2025, 07:34:12 AM

Quote from: WingnutAndAPrayer on February 10, 2025, 07:21:34 AM

Acquired from a collection hosting domestic varieties, pucked prior to 1990. It was put out the same time as a large clutch of Ellensburg nodules and has the same style cortex. I haven't been able to ID it from any examples of Eburg or Red Top. Any guesses would be welcome- I'd rather not slice into it unless I know I can find another.

See if it reacts to blank light,  UV.

Sent from my SM-G781V using Tapatalk

Title: Re: Red and Black Botryoidal?
Post by: Phishisgroovin on February 10, 2025, 07:34:30 AM

Quote from: Phishisgroovin on February 10, 2025, 07:34:12 AM

Quote from: WingnutAndAPrayer on February 10, 2025, 07:21:34 AM

Acquired from a collection hosting domestic varieties, pucked prior to 1990. It was put out the same time as a large clutch of Ellensburg nodules and has the same style cortex. I haven't been able to ID it from any examples of Eburg or Red Top. Any guesses would be welcome- I'd rather not slice into it unless I know I can find another.

See if it reacts to blank light,  UV.

Sent from my SM-G781V using Tapatalk

Black light

Sent from my SM-G781V using Tapatalk

Title: Re: Red and Black Botryoidal?
Post by: WingnutAndAPrayer on February 10, 2025, 08:28:32 AM

If I had one, trust, I'd be flashing all my mysteries. Talked to a guy at the Boise rock shop and he suggested a UVBeast. I picked up some blobby job in Ogden at a Walmart parking lot that looks a helluva lot like Youngite. Blacklight is on the list, for sure!

Title: Re: Red and Black Botryoidal?
Post by: WingnutAndAPrayer on February 10, 2025, 09:24:23 AM

Here it is side-by-side with the two blues. Behind is a Uvalde Gravel 'blue' for color ref.

Title: Re: Red and Black Botryoidal?
Post by: irockhound on February 10, 2025, 08:55:18 PM

To me it definitely looks like some of the brown to black fire agate with the clear chalcedony the bots.  Normally would show a green under UV.

Title: Re: Red and Black Botryoidal?
Post by: Enchantra on February 10, 2025, 09:09:02 PM

I have no idea what is could be other than if you do cut it eventually, please show us the inside!

Title: Re: Red and Black Botryoidal?
Post by: WingnutAndAPrayer on February 11, 2025, 11:23:19 AM

I will dutifully report back re. luminescence and when it hits the saw you guys will definitely see it. Getting braver about cutting quality with the increase in blade prices!!