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Xrf obsidian rock


taray singh
 

Hi guys

Here is an xrf of a cut and polished obsidian rock.

It is brownish black??and glassy.

There are several peaks

Some appear to fall within the Compton scatter region

I attempted to identify some peaks

Could be missing some too due to matrix effect

Taray


taray singh
 

Here is the mca which I can only post on reply mode on my iPhone?




On Saturday, December 12, 2020, 11:42 PM, taray singh via groups.io <sukhjez@...> wrote:

Hi guys

Here is an xrf of a cut and polished obsidian rock.

It is brownish black??and glassy.

There are several peaks

Some appear to fall within the Compton scatter region

I attempted to identify some peaks

Could be missing some too due to matrix effect

Taray


 

Fe
Ni (could be from sensor body)
Pb


possible?
Ag
In
Ba

Geo


taray singh
 

Geo
Yes I do see that solitary Ni peak sometimes.
Ok now I ¡®m aware
I thought I saw Ag too but din want to commit myself?
Otherwise thinking?I will be?in front?of the firing squad?
Taray




On Sunday, December 13, 2020, 12:17 AM, GEOelectronics@... wrote:

Fe
Ni (could be from sensor body)
Pb


possible?
Ag
In
Ba

Geo


 

No problem. I didn't look at your analysis on purpose.

When things slow down, we can work on your backscatter from the source to reduce it. No rush, still lots to be found as-is.

Did you mention or know the source region where the obsidian was collected??
Our local university research reactor team does mass spectrometer studies of obsidian as a sideline, is world famous for their in house library of scans, They are one of the top resources for researching trade routes from ancient mankind -locating origin of obsidian used in arrowheads, knives tools etc, vs. where they were found thousands of years later.

Geo


From: "taray singh via groups.io" <sukhjez@...>
To: [email protected]
Sent: Saturday, December 12, 2020 10:55:33 AM
Subject: Re: [XRF] Xrf obsidian rock

Geo
Yes I do see that solitary Ni peak sometimes.
Ok now I ¡®m aware
I thought I saw Ag too but din want to commit myself?
Otherwise thinking?I will be?in front?of the firing squad?
Taray




On Sunday, December 13, 2020, 12:17 AM, GEOelectronics@... wrote:

Fe
Ni (could be from sensor body)
Pb


possible?
Ag
In
Ba

Geo


taray singh
 


Did you mention or know the source region where the obsidian was collected??
United Kingdom.,if not mistaken.





On Sunday, December 13, 2020, 1:08 AM, GEOelectronics@... wrote:

No problem. I didn't look at your analysis on purpose.

When things slow down, we can work on your backscatter from the source to reduce it. No rush, still lots to be found as-is.

Did you mention or know the source region where the obsidian was collected??
Our local university research reactor team does mass spectrometer studies of obsidian as a sideline, is world famous for their in house library of scans, They are one of the top resources for researching trade routes from ancient mankind -locating origin of obsidian used in arrowheads, knives tools etc, vs. where they were found thousands of years later.

Geo


From: "taray singh via groups.io" <sukhjez@...>
To: [email protected]
Sent: Saturday, December 12, 2020 10:55:33 AM
Subject: Re: [XRF] Xrf obsidian rock

Geo
Yes I do see that solitary Ni peak sometimes.
Ok now I ¡®m aware
I thought I saw Ag too but din want to commit myself?
Otherwise thinking?I will be?in front?of the firing squad?
Taray




On Sunday, December 13, 2020, 12:17 AM, GEOelectronics@... wrote:

Fe
Ni (could be from sensor body)
Pb


possible?
Ag
In
Ba

Geo


 

OK UK.
It's interesting how much stuff is in the ground, like Eu in original Trinity sand. Not something you think about normally. Yet we still see the activated Eu-152 which has already passed 5.5 half lives, leaving only 2% left today.

Geo


From: "taray singh via groups.io" <sukhjez@...>
To: [email protected]
Sent: Saturday, December 12, 2020 11:57:37 AM
Subject: Re: [XRF] Xrf obsidian rock


Did you mention or know the source region where the obsidian was collected??
United Kingdom.,if not mistaken.





On Sunday, December 13, 2020, 1:08 AM, GEOelectronics@... wrote:

No problem. I didn't look at your analysis on purpose.

When things slow down, we can work on your backscatter from the source to reduce it. No rush, still lots to be found as-is.

Did you mention or know the source region where the obsidian was collected??
Our local university research reactor team does mass spectrometer studies of obsidian as a sideline, is world famous for their in house library of scans, They are one of the top resources for researching trade routes from ancient mankind -locating origin of obsidian used in arrowheads, knives tools etc, vs. where they were found thousands of years later.

Geo


From: "taray singh via groups.io" <sukhjez@...>
To: [email protected]
Sent: Saturday, December 12, 2020 10:55:33 AM
Subject: Re: [XRF] Xrf obsidian rock

Geo
Yes I do see that solitary Ni peak sometimes.
Ok now I ¡®m aware
I thought I saw Ag too but din want to commit myself?
Otherwise thinking?I will be?in front?of the firing squad?
Taray




On Sunday, December 13, 2020, 12:17 AM, GEOelectronics@... wrote:

Fe
Ni (could be from sensor body)
Pb


possible?
Ag
In
Ba

Geo



 

¿ªÔÆÌåÓý

Yeah this is a weird one.

The Fe, Pb, and Ni look ok but the Rb appears to be Pa at 133 with the Np sitting next to it at 13.9 and again at 17.7. The Pa .again appears with your Y for a Kb1 of 17.7 but being its greater than the Ka1 its combined with something else. I find Pa strange to see and have my doubts. Y Ka1 is at 14.9 and at 16.7 but is weak. The Np Lb2 is at 16.8 and is confusing this broad peak. So I say it isn¡¯t resolved but it¡¯s not just Y. The Zr peak at 17.73 is actually the NpLb1 at 17.75, Zr Ka1 sits at 15.77 on the left shoulder of the ¡°Y/Pa/? peak. The Sb noted is actually the Am241 26.3 gamma.

The Ag could be Sn but wit out a 3 point or better cal and longer count time it¡¯s hard to say much.

This was a tough spectra to interpret lots going on.

If anyone else has an obsidian piece let¡¯s take a look

Dud

?

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Saturday, December 12, 2020 8:43 AM
To: [email protected]
Subject: [XRF] Xrf obsidian rock

?

Hi guys

Here is an xrf of a cut and polished obsidian rock.

It is brownish black??and glassy.

There are several peaks

Some appear to fall within the Compton scatter region

I attempted to identify some peaks

Could be missing some too due to matrix effect

Taray


taray singh
 

Thanks for the feedback?

I guess tough spectrums are a good exercise for learning and applying xrf?

Obsidian is similar to Trinitite??in a way

Taray