?

The new run is seeing Ce, La, Nd, Nb (16.62), Y (14.96)

Ga is still pretty weak at 9.27 and maybe Se at 11.27

The REE’s seen in XRF would tend to confirm the optical spectra is showing what is presumed to be REE’s as well

Dud

?

?

Here are??the sites and files which are self explanatory?

Chatgpt is a good guide?

?

Fluorescent spectroscopy can enhance XRF analysis by providing complementary information about the sample's elemental composition and mineralogy. It helps identify specific fluorescent peaks that may indicate the presence of certain elements or compounds, aiding in the interpretation of XRF data. Additionally, it can assist in distinguishing between overlapping spectral lines and enhancing the detection of trace elements, ultimately improving the accuracy of the analysis.

End

Besides some organic substances glow under UV In a diagnostic way

Many dyes and proteins have specific florescent activity?

If you follow optical spectrum forum,gin tonic has got a optical florescent compound called quinine with specific absorption and florescent peaks

Xrf will not show anything since it is purely organic mixture.

?

?Repeated xrf for syenite with my my 60KV??xray setup?

Ga not seen?

As is showing up

May Nb is hiding??somewhere?

Ce is showing its presence?

Attempted dil HCl method with broken particles by scrapping with a file

The solution remains too dilute with very light orange fluorescence

Maybe I should grind a rock first but no intention.

Not enough florophores dissolving??to give bright orange flourescense.

Direct rock method is limited by small sized orange glows which widely scattered?

If there is a big patch of orange glow.,things could have??been easier

Files to follow

Tq

?

?

On Monday, October 21, 2024, 11:17 PM, Dude <dfemer@...> wrote:

Assuming the fluorescence is due to sodalite, which is a aluminum silicate, I’m not sure if HCl will leach anything out, but it’s certainly worth a try. I’ve had good luck using HCl on the REE oxides.

?

Note the absorption at 401nm which is good for using a laser pointer and another good one at 479nm which laser diodes are available.

?

Dud

?

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Sunday, October 20, 2024 6:20 PM
To: [email protected]
Subject: Re: [XRF-Page-2] syenite

?

Dude?

Will attempt a?longer acquisition time for xrf?

Some rocks deserve more attention?

Not sure dissolving this alkaline rock in dil HCl and?shooting through a quartz cuvette will help in 365UV florescent spectrum.

Quite an interesting specimen for analysis?

UV florescent spectroscopy goes hand in hand with xrf
Thanks

?

?

On Monday, October 21, 2024, 1:20 AM, Dude <dfemer@...> wrote:

Taray,

I looked for Ga but it’s too weak to say. Perhaps with a longer count time and running the HV down to 20 kV may help bring out the lower energy elements

The optical data are overwhelmed by the 365nm producing the second order peak at 730 and even the 3^rd order at 1095nm.

The broad fluorescence peak shows four convolved peaks that are probably rare earths.

Dud

?

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Sunday, October 20, 2024 6:43 AM
To: [email protected]
Subject: Re: [XRF-Page-2] syenite

?

?

Well syenite is found in China based on this article?

This Fangcheng type florescent rocks are sold of as yooperlites or healing stones.

Well the composition of mine is similar to this??chinese article samples.

They indeed contain lots of Zr

Besides Zr ,there is also peaks suggestive of Ce and??Ba which is dominant .

There could??be a Ga peak there as well besides other peaks.

I generally like to keep my acquisition times short to avoid any untoward circumstances with my X-ray machine.

?

Did a 365 nm florescent spectrum using C8 Convo

It shows the florescence culmating in orange

Not laser strong for peak identification?

Spectroglyph software expired?

Enclose article and narran UV spectroscopy file

Maybe Dude can convert it for me if necessary?

Another interesting difference with granite is their magnetism

Copied text..

?It contains much more ferromagnesian minerals biotite and hornblende, and rare pyrox- ene. The specific gravity varies with the constituent minerals and their proportion ranging between 2.6 and 2.8.?

Files??sent

Thank you?

?

On Sunday, October 20, 2024, 9:39 PM, taray singh via groups.io <sukhjez@...> wrote:

text to follow

?

On Wednesday, October 23, 2024, 10:59 PM, taray singh via groups.io <sukhjez@...> wrote:

File and pics to note

?

Zircon coexisting with florescent orange sodalite will give yellow florescense

This zircon florescense is typically a broad yellow band at 575 nm

There??is a slope in this region with both 405 nm and 365 UV excitation?

?

There are florescent lines from 600 to 700 nm spectrum?

No ones??knows with certainty what is causing this lines besides the possibility of REEs?

?

Work with synthetic sodalite indicates that it is the presence of sulfur as a polysulfide which is responsible for the fluorescence of sodalite.

?

Pics of florescent close ups spectrum of 405 nm and 365 excitation and article?

Thanks?

?

?

On Wednesday, October 23, 2024, 10:59 PM, taray singh via groups.io <sukhjez@...> wrote:

File and pics to note

Zircon’s are noted for hosting REE and the XRF shows that. The sodalite Cl is also seen in the XRF. The optical spectra is a good match based on that paper.

Dud

?

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Wednesday, October 23, 2024 8:03 AM
To: [email protected]
Subject: Re: [OpticalSpectroscopyGroup] [XRF-Page-2] syenite

?

Zircon coexisting with florescent orange sodalite will give yellow florescense

This zircon florescense is typically a broad yellow band at 575 nm

There??is a slope in this region with both 405 nm and 365 UV excitation?

?

There are florescent lines from 600 to 700 nm spectrum?

No ones??knows with certainty what is causing this lines besides the possibility of REEs?

?

Work with synthetic sodalite indicates that it is the presence of sulfur as a polysulfide which is responsible for the fluorescence of sodalite.

?

Pics of florescent close ups spectrum of 405 nm and 365 excitation and article?

Thanks?

?

?

?

On Wednesday, October 23, 2024, 10:59 PM, taray singh via groups.io <sukhjez@...> wrote:

File and pics to note

?

There is S in there too

When??mixed powdered rock with dil HCl ,some minor effervescence took place?

After attempting to dry,there was rotten egg smell suggestive of H2S

I tried??casually heating and doping with sulfur,,..no change??in glow intensity??

On Thursday, October 24, 2024, 12:08 AM, Dude <dfemer@...> wrote:

Zircon’s are noted for hosting REE and the XRF shows that. The sodalite Cl is also seen in the XRF The optical spectra is a good match based on that paper.

Dud

?

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Wednesday, October 23, 2024 8:03 AM
To: [email protected]
Subject: Re: [OpticalSpectroscopyGroup] [XRF-Page-2] syenite

?

Zircon coexisting with florescent orange sodalite will give yellow florescense

This zircon florescense is typically a broad yellow band at 575 nm

There??is a slope in this region with both 405 nm and 365 UV excitation?

?

There are florescent lines from 600 to 700 nm spectrum?

No ones??knows with certainty what is causing this lines besides the possibility of REEs?

?

Work with synthetic sodalite indicates that it is the presence of sulfur as a polysulfide which is responsible for the fluorescence of sodalite.

?

Pics of florescent close ups spectrum of 405 nm and 365 excitation and article?

Thanks?

?

?

?

On Wednesday, October 23, 2024, 10:59 PM, taray singh via groups.io <sukhjez@...> wrote:

File and pics to note