The phrase "raw opium" is correct and can be used in written English.
Example: The government is cracking down on the illegal trade of raw opium in an effort to combat drug trafficking.
Armed convoys transport raw opium around the country unhindered.
The turfy-chocolaty nosegay of raw opium wafts from hundreds of milk cans.
The raw opium was first heated over a lamp so it took on a treacly consistency.
Roughly 10 pounds of raw opium are used to produce 1 pound of heroin.
Most bombers are browbeaten simpletons with a slug of raw opium paste held between gum and cheek.
But it looks disconcertingly like raw opium and in these security-conscious days can attract unwelcome attention.
In Taliban-controlled areas, traffickers have opened more labs that process raw opium into heroin, vastly increasing its value.
When the unripe seed capsules are cut, they exude a milky latex that is the source of raw opium and can be processed into morphine, codeine, and heroin.
Unrelated to crack cocaine, the drug is mostly smoked, is vastly more powerful than raw opium and has caught on rapidly.
While marijuana and methamphetamines have sometimes been a problem in Tasmania, heroin production has been virtually nonexistent despite all the raw opium grown and collected each year.
This raw opium may be ground into a powder, sold as lumps, cakes, or bricks, or treated further to obtain such derivatives as morphine, codeine, and heroin.
