You may not be able to smoke it but have you thought of using a butane honey maker and makeing some oil from it? Since you are extracting the thc directly and leaving behind everything else you should be able to salvage something at least and not totally waste it.
cleric998 Reviewed by cleric998 on . Moldy or Normal? This stuff is hard and crispy, not at all soft, burns very very slowly, has brown bits on it like a caramel coating appearance.... Is it moldy? gone bad? And the key question of course is: Can I still smoke it? Not the best pics but maybe it can help: Rating: 5