The phrase "a mass of stuff" is correct and usable in written English.
It can be used to describe a large quantity of various items or materials that are not specifically categorized.
Example: "After the party, there was a mass of stuff left behind, including empty bottles, plates, and decorations."
Alternatives: "a pile of things" or "a heap of items".
At the latter extreme you have the show at the Saatchi Gallery called New Blood, a quaintly vampirical title that signals the presence of a mass of new stuff, almost all of which (except for some pictures by that sturdy and perennially interesting talent Paula Rego) vividly testifies to the patron-dealer-promoter's lack of any kind of connoisseurship at all.
"Block", meaning a solid mass of stuff (in this case a block of flats), goes way back to Middle English.
So there is a whole mass of stuff... in the universe we know nothing about and we never will know anything about, because the light will never get to us in time for us to know anything about it".
The hand is engaged in creating Man and Woman out of an amorphous mass of stuff, so the palm can't be studied, but a palmist can get the preliminary impressions from the back of the hand - the palm merely furnished the details.
"Jazz was played in the bigger concert halls like Carnegie, but of course there has been a race issue," says Garland. "Add to that the history of drugs and the poverty and you've got a whole seething mass of stuff just waiting to ostracise jazz musicians from the concert hall".
This claim probably means that the original state of the universe was an indefinitely large mass of stuff that was also indefinite in its character.[2] This stuff then gave rise through its own inherent power to the ingredients that themselves constitute the world as we perceive it.
Keep in mind that the concrete will harden into a mass of solid rock like stuff once it is set.
This is the way of many people. They scurry around doing a little bit here, a little bit there, always worrying about the mass of stuff yet undone.
Gessen said much the same thing to me on yet another hot afternoon, in a falafel joint in another part of Brooklyn: "Here I am with all this fiction no one would want to publish, and here's Mark with these essays no one's going to publish, and after a while we felt like we had this critical mass of stuff that nobody would want to publish".
