Installation trouble on M2 MacPro

Is OPENMC available for this platform? I followed the instructions to install using mamba & Conda-forge but get the following:

(openmc-env) Output % mamba search openmc
Getting repodata from channels…

conda-forge/osx-arm64 12.8MB @ 12.7MB/s 0.9s
conda-forge/noarch 17.3MB @ 11.4MB/s 1.5s
No entries matching “openmc” found

I saw that others have had this problem but last issue was more than a year ago, so I thought I would ask again.

Thanks,
Joe