If @srx23 has access to the Mint system he can also just do it old school:
sudo cp /path/to/iso /dev/disk/by-id/usb-<...>
Device links in /dev/disk/by-id have a naming scheme makes it easier to identify the correct device. I just did:
sudo cp ~/Downloads/resolute-live-server-amd64.iso /dev/disk/by-id/usb-SanDisk_Ultra_4C530001200708109334-0:0
(no need to get fancy with dd or even “cloning tools” 
)
That wrote the image directly to my USB stick from Sandisk. I hope that illustrates said naming scheme; consult this Redhat documentation item for details on the “why”.