The story is "Environment" by Chester S. Geier. The anthology is Groff Conklin's Omnibus of Science Fiction; an abridged versionedition was published in Britain as Strange Adventures in Science Fiction.
"Deserted!" he whispered. "Deserted— but"Deserted—but why?"
Jon Gaynor turned as Wade Harlan emerged from the lock. The two glanced at each other, then, in mutual perplexity, their eyes turned to the dreaming city. After a long moment, Wade Harlan spoke.
"Jon, I was thinking— Perhapsthinking—Perhaps this isn't the right planet. Perhaps . . . perhaps old Mark Gaynor and the Purists never landed here at all—"
Jon Gaynor shook his brown head slowly. He was a tall, lean figure in a tight-fitting, slate-gray overall. "I've considered that possibility, Wade. No— thisNo—this is the place, all right. Everything checks against the data given in that old Bureau of Expeditions report. Seven planets in the system—this the second planet. And this world fits perfectly the description given in the report—almost a second Earth. Then there's the sun. Its type, density, rate of radiation, spectrum—all the rest—they check, too."
