Sounds like a high nitrogen fertilizer. Well rotted farm manure, composted garden waste, bone meal, fish blood and bone are all good and preferable organic alternatives to the pure chemical ones.

It is hydrated sodium calcium aluminosilicate. Nothing I can see is sold in the UK as an equivalent. What is it used for?

Hi, Azomite is a registered trade mark for a complex silica, hydrated sodium calcium aluminosilicate, with an elevated ratio of trace minerals, unique to the Utah mineral deposit, from which it is mined, and as such has no equivalent in the UK.
It is used as a soil improver, by adding these trace minerals to the soil, according to wikipedia, Derek.

Azomite is a montmorillonite clay deposit, which is a type of clay with millions of sub-microscopic pores in each particle. As such, it is good at absorbing and holding water and nutrients.

Oops, I retire humiliated!!! I was just going on Azote meaning nitrogen. sorry.

And there you have it !
How have the recent storms treated you , Stera ?
I hope all is well ?

Not humiliated after all - Ammonium sulphate IS an inorganic nitrogen fertiliser - crisis of confidence there!
Still recommend the organic alternatives.
Hi Driad, the storms weren't as bad as some places - no trees down, only a few branches here and there and West coast rain at is best .Didn't tempt us outside. How was it with you?

Stera , we're 10mls inland , so apart from strong winds and oceans of rain , not too bad .
The coast was quite badly affected , but is now mostly cleared of debris .
Better be prepared for the next day or so , though !

Stay safe!

Tugbrethil, I believe you're thinking of Bentonite which is the clay used to absorb spills, etc. I have used it when making wine to clear it. I think the name comes from where it's mined in Fort Benton, Wyoming.

Actually, bentonite and montmorillonite are closely related in crystal structure, and are often found together in the same deposit. The main practical difference for gardeners is that bentonite expands when it gets wet, which can sometimes disrupt roots--one of the main reasons why areas with extensive bentonite deposits, like the Painted Desert of Arizona, are so barren.

I understand where you're coming from, but to quote an old adage... A Pansy is a flower, but a flower isn't necessarily a pansy.