I never tried, but i don’t think you can run a Gorgona SD image on Orange Pi. You should use a specific Raspbian for Orange Pi, like this:
http://www.orangepi.org/downloadresources/orangepipc/oragepipc_e930546e866b23585721e5d2a6.html
And build the Zynthian on top of it using the setup script. You can try to follow these instructions:
but probably you have to be creative in the process 
Good Luck!
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