Green rocks now turning yellow

[RELICDUDE07]

Looking around a bit & the rocks are changing colors?What is this stuff?

 

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[RELICDUDE07]

Sulfur rock- I think this stuff is coming from a salt dome....Had no idea 1 could be right under the surface...

 

[Eu_citzen]

Yellow serpentine is my guess.. Here's a cut one with hematite (iron ore, black)

 

[RELICDUDE07]

This stuff is very soft & it stinks !Lol-i really have been looking at the salt dome info on the gulf of mexico -it sounds about right-and the rocks match up....Now i have to find some chambersite purple rock crystal! Origin: Venice Salt Dome / Lake Hermitage / Plaquemines Parish / Lousiana / USA

 

[Eu_citzen]

How soft? Can you scratch it with your finger nail?

 

[RELICDUDE07]

Yes & cut it with a steak knife.

 

[Eu_citzen]

Sulphur does have a low melting point and burns readily in air - maybe your ID wasn't to far off.
Chip off a piece and try to ignite it, the smell of it burning is also quite special.