Oddity in the Ashes

[gazerbeam06070]

Greetings All,

When cleaning my fireplace insert tonight, I noticed a tremendous number of odd clumps. I've seen these on occasion but today the ash bucket was FILLED with these things.

It's not charred wood. The clumps are light and porous, similar to pumice. Has a hard texture like rock when struck against metal or glass. Does not dissolve in water and is not magnetic.

Any clues to what process in a fireplace produced this?

I have a new wood supplier this year. Is this wood related?

TYIA

Ken

 

[begreen]

Clinkers. The firewood burned had a high amount of silica, probably in the bark.

 

[ScottLewis]

That's a new one on me.

 

[Murray01]

Logs skidded thru sand?

 

[Dieselhead]

I’ve seen a post or 2 a year on here asking the same, also experienced it myself a few times over the years.

 

[begreen]

That's a new one on me.

This question comes up every year. Different wood being burned?

 

[MRD1985]

I’ve seen that in my ash pile this year more than once so far too

 

[begreen]

We get clinkers frequently burning Doug Fir.