As the title says.

How similar do these two barks physically look?

Many thanks

IME, they are pretty different.

Mimosa bark tends to have a quite distinguishable purple/pink ish color at least on the inside, often times in whole bark strips the outer color can be more greyish or brownish. Every batch of powdered or shredded bark I've come across is a very distinguishable purple/pink color.

I've only encountered acacia confusa bark a handful of times so I may not be the best resource on this, but it's always been brown/tan in color when I have encountered it.

IME I haven't seen MHRB powdered but with ACRB powdered it is quite a dark red more then the pink or purple ( so I'm told ) tones of mimosa !

Silentchemist pls edit you're post as there's no discussing anything about procuring or sourcing bark !!

Edit ; Also read the attitude section !!

Could someone please specifically highlight what was wrong with my post?

There was no mention of what I had done or intended to do. I was asking about a certain scenario.

I have read the attitude section and believe I have been polite and respectful at all times.