Northern Territory police received reports in April of cat food being stolen from a supermarket in the Palmerston suburb of Bakewell, southeast of Darwin.
Police said youths were arrested and reported they were stealing the cat food to exchange it for cannabis from a woman in the nearby suburb of Gray.
Police executed a search warrant at a residence in Gray on Thursday and seized 975 grams of cannabis, multiple tablets of schedule two and four drugs and counterfeit currency.
Weapons including eight extendable batons, two Tasers, knives and samurai swords were also seized.
Police said they also found a substantial quantity of pure gold and silver coins and bullion with an estimated value of $35,000, and $3850 in Australian currency.
The woman was charged with possessing and supplying commercial quantities of schedule two drugs, possessing schedule four drugs, nine counts of possessing prohibited weapons and possessing counterfeit money.
She was also charged with receiving or possessing tainted property and was remanded to appear in court on Friday.
Senior Sergeant Darren Burns praised the efforts of investigators involved in the operation.
"Removing drugs, prohibited weapons and other illicit property from our streets helps protect vulnerable members of the public," he said in a statement.
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