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This??green glow of tektites is due??to higher Fe2+???content caused by exposure to reducing agents from high intensity impact .

This ferrous visible absorption peak can be analyzed by optical spectroscopy using polished rocks .

Mine is coarse with noisy optical peaks?

The Fe2+ has an absorption peak at 1050 nm in glass.The absorbance of Fe2+ is so strong that even small ,less than 4 %? of the total iron present in the glass will produce a green hue.

As for titanium in tektites?

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Tektites contain more titanium compounds than pseudo-tektites or obsidian because they form under high temperature, high-pressure conditions from impact events that incorporate titanium-rich minerals. In contrast, pseudo-tektites and obsidian are formed through volcanic processes, which typically involve lower temperatures and less titanium-rich source materials. As a result, tektites generally have higher concentrations of titanium-bearing compounds

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On Sunday, December 1, 2024, 10:04 AM, taray singh via groups.io <sukhjez@...> wrote:

Dude?

Even the big tektite has a a green hue by shining visible light??close to the sides..Otherwise opaque .

The??rounded pseudo one is grey to brown to visible transmitted light .No green noted

Btw these are all unpolished??natural glass rocks.

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No florescense to LW and SW ultraviolet light.I was hoping for some glow??for? ??pseudo tektite.?

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Also noted Zr??seems common??in all??3 glass types.

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On Sunday, December 1, 2024, 2:10 AM, Dude via groups.io <dfemer@...> wrote:

Taray,

Also in the Saffordite is Zr at 15.79 and possibly a small Y at 14.96 keV.

The Tektitebg shows Fe, Rb, Sr, Ba, possibly Y and Ti,

Dud

From: [email protected] [mailto:[email protected]] On Behalf Of taray singh via groups.io
Sent: Saturday, November 30, 2024 1:54 AM
To: [email protected]
Subject: Re: [XRF-Page-2] pseudo tektites

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Hi guys?

Here is rock bought online.

Believe to be a saffordite??,a variety of pseudo tektite.

This saffordite being glassy in origin share similar??xrf and specific gravities

SG of saffordite is 2.41

Xrf shows Fe,Rb ,Sr and??Ba

Could not identify Ti with my system and acquisition times?

Not magnetic

Even??xrf synthetic glass with some additives is quite similar?

This green beer glass should have some color additives like Cr and Fe.

I covered glassware previously.

Optical properties appear to be slightly different?

The saffordite transmit grey by shining visible light through it

Looks whitish on pic .

The tektite appears to have greenish yellow hue on visible light transmission.

Halogen light visible absorbance spectrum of tektite and??saffordite are noted to be similar except for a slightly increased red light absorption for tektite.This explains the green glow in optical spectrum.

Below are some interesting sites.?

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?Thanks

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Taray

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On Saturday, November 30, 2024, 4:49 PM, taray singh via groups.io <sukhjez@...> wrote:

text to follow...

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