What is this nsulation type?

#1

I have never seen this type of insulation before. Can someone tell me what it is, Thanks

Insulation 1
Insulation 11500×2000 1.68 MB
Insulation 2
Insulation 21500×2000 1.43 MB

#2

Mineral wool or commonly called rock wool

#3

Thanks Les, I thought it might be that.