Sandy's eyes twinkled as he put the quiz. Westlake laughed.
"I hope so. I think so. Mining is bound to be more or less of a gamble. A first-class mining engineer could tell you where you ought to find the gold in a certain region, but he couldn't guarantee that there would be any. Experience counts a lot, of course, but I do know something about sylvanite, or white gold. I've seen its big field over in Boulder and Teller Counties, Colorado. They call it graphic gold, sometimes, because the crystals are very frequently set up in twins and branch off so that they look like written characters. The crystals are monoclinic and occur in porphyry almost exclusively. It is a mixture of gold and silver telluride and it's also called tellurium. Named after Transylvania where it was first found. There's some in Australia."
"I'm much obliged," said Sandy. "I've learned a heap."
Westlake looked at him suspiciously, but Sandy's face was grave as that of the sphinx.
"The porphyry dykes here are in syncline," the engineer went on. "They dip toward each other from both sides of the valley and form loops or folds. If you imagine an onion sliced in half you catch the idea. Call every other layer porphyry, with rock and other dirt between. The bottom of a loop may be deep down or it may be missing altogether, ground away when the valley was gouged out by a glacier. There may be other loops beneath it. Some portions of the loops come to the surface on the hillside and you can guess at their dip. But—the gamble lies in this. The ones that are exposed may or may not carry the gold-bearing veins. You might hit it at grass roots and find a lot of it. Or you might go down deep sinking through the hard porphyry for nothing. Science says that the tellurium crystals are in the porphyry dykes and that these dykes lie in syncline, perhaps two or three, nested one under the other."
"Gosh," ejaculated Miranda Bailey. "It sure sounds like a lottery to me. I wonder c'ud we hire you to p'int out a likely place for us to locate?" They had left the one street by this time and were making their way slowly along the western slope of the valley. Men worked at creaky and shaky old windlasses or appeared and disappeared at the mouths of lateral shafts, repairing the ancient timbers, wheeling out rubbish. Once or twice they heard the dull boom of a shot where dynamite was trying to split the rock and uncover a lead. On several of the claims were groups, the members of which made no pretense at mining, but lolled about, playing cards or pitching dollars at a mark. These were speculators, holding to sell. Stakes with papers in clefts, piles of stones at the corners, showed the boundaries of the claims.
"If you think my judgment is any good," said Westlake, "you're welcome to it. I could be more certain of helping you when it comes to assaying or developing a mine. Are you-all taking up claims? Do you want to align them, or do you want to pool interests and locate here and there where the chances look good?"
"Miss Bailey an' her nephew are goin' to take a chance," said Sandy. "Me an' my two partners are lookin' for claims located by the man who first discovered the camp. They can't get away an' we'll see Miss Mirandy settled first."
"Me, I aim to take up a claim," said Mormon. "So does Sam."
"Who's goin' to work it?" asked Sandy. "You-all forget that we agreed when we went into the ranchin' business together not to go into speculations on the side 'thout mutual consent. From what I can make out from Westlake's talk speculation is a mild term fo' lookin' fo' gold. I don't consent, by a long shot. We got Molly's claims to look after with our interest in 'em, an' I've a hunch that's goin' to occupy all our time we got to spare. What does Roarin' Russell do in the camp," he asked Westlake, seemingly irrelevantly, "or ain't he shown yet?"