We compiled this a while back:
Items with Slot
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Type 1 LDoN crafted/AP purchased armor; PoR jewelry
Type 2 LDoN crafted/AP purchased armor
Type 3 LDoN AP purchased armor; GoD quested armors
Type 4 Weapons
Type 5 LDoN purchased weapons
Type 6 LDoN purchased weapons, augs for type 6 are weapon restrictive (e.g. 1h only or min delay)?
Type 7 General slot on most worn items
Type 8 Specific items from GoD/OoW/DoN/DoDH/PoR
Type 9 DoN purchased; PoR crafted jewelry
Type 10
Type 11 DoN player crafted Armor
Type 12 DoN player crafted
Type 30 Epic 2.5
Augs for Type (*All* usually will fit in any slot)
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Type 1 General *all*
Type 2 LDoN AP purchased (stats)
Type 3 LDoN purchased (focii)
Type 4 Weapon procs
Type 5 LDoN AP purchased weapon procs
Type 6 Usually for weapons with restrictions
Type 7 General *all*
Type 8 Some GoD crafted, DoN, DoDH, PoR dropped
Type 9 DoN purchased
Type 10
Type 11 DoN player crafted, Specific to Armor slot
Type 12 Most Focus augs from OoW, DoN, DoDH including crafted.
courtesy of Aude Sapere website.