The phrase "a source of extraordinary" is correct and usable in written English.
It can be used when referring to something that provides exceptional or remarkable qualities, benefits, or experiences.
Example: "The research center has become a source of extraordinary innovation in renewable energy technologies."
Alternatives: "a wellspring of remarkable" or "a reservoir of exceptional".
He has turf toe in his right big toe and that's bad enough, but a damaged ligament in his left big toe is a source of extraordinary pain.
Towards the end of the war, he said he would "leap laughing into the grave because the feeling that he had five million people on his conscience would be for him a source of extraordinary satisfaction".
"As well as being a source of extraordinary natural beauty and wonder, healthy seas are the bedrock of a functioning global economy," said Louise Heaps, chief advisor on marine policy at WWF-UK, who helped to compile the report.
Health and medicine have been a source of extraordinary graphic art, and William H. Helfand, a specialist in art and medicine, proves it time and again with his extensive collection of health and medical-related artifacts, as well as the scores of books and exhibitions he has produced.
For so many of us looking for an opportunity to fight bigotry and bias in the workplace or in our broader culture, we may be missing the opportunity staring back at us in the mirror: using the ordinary nature of who we are as a source of extraordinary power.
Dialysis management is also a source of extraordinary bills.
And this comparatively small subset of patients is the source of extraordinary amounts of volume.
Our government, and it is always our government, can also be the source of extraordinary good--precisely because it can do things that private companies cannot or will not do.
May their memories of this extraordinary woman be a source of comfort to them..Allan Schranz, RabbiRoger Cohen, President.
At the same time it must responsibly and creatively manage its own accomplishments or interpretations, which are sources of extraordinary success, but also of injustice, war and disorder.
And for the most part they were written here as well, which makes this house the source of an extraordinary body of work, not just in quality but quantity".
