Update: I'm in Amun, Furnace, and pulling Jallycite Fragments with a 25 rating. Fragments don't ever show up on the scans, I just keep a record of what I find.
You can also mine Jallacyte fragments in Seyfert, although best results in my experience are in Amun. Hint for newer players who does mining - this resource is in high demand right now as its refined form - Jallacyte is main ingredient in crafting the starter corporation contract offices.
What I don't get is if i manually collect jally frags I could prob get to 5k pretty quickly but after investing in the grachev auto miner that hoovers everything mineral from the asteroids Why doesn't it harvest jally frags ? I mean in 3 days it collected 112 fragments lol. I could click probably a few 100k in 3 days what gives? . Plus I thought the nebula harvester would be harvesting the lesser known ores and metals not the normal junk you can self click in anvil. or franklyn. Tellerite,zerconium. Seriously???. I was expecting flux gas and hannaium and alike you know the scarcer deposits