Mere hours after I drafted this article highlighting Sandstorm Gold (NYSE: SAND) as one of the five juiciest picks in the gold patch, this growth-hungry gold streamer delighted investors with a new addition to its precious portfolio.

With production from Colossus Minerals' (ticker "COLUF" on the over-the-counter exchange) Serra Pelada mine in Brazil set to commence next year, Sandstorm's latest stream is remarkable for the brief time frame separating its $75 million upfront payment from the anticipated flow of revenue.

It is remarkable, also, as a first foray for Sandstorm into platinum group metals in addition to gold. Sandstorm will enjoy 1.5% of all gold produced at Serra Pelada for a purchase price of $4oo per ounce, while scooping up 35% of the mine's platinum output at a very attractive price of just $200 per ounce. Meanwhile, 35% of palladium production will divert to Sandstorm's micro-cap sister company.

Under the very capable leadership of former Silver Wheaton (NYSE: SLW) CFO Nolan Watson, Sandstorm Gold is steadily accumulating a very attractive portfolio of stream agreements featuring Luna Gold's soon-to-expand Aurizona mine (also in Brazil), Brigus Gold's (NYSE: BRD) improving Black Fox mine, and Silvercrest Mines' (NYSE: SVLC) Santa Elena mine in Mexico. Significantly -- because this deal with Colossus required only half of the capital raised in Sandstorm's recent $150 million financing -- the company remains in position to pursue yet another strategic acquisition in the near term.

Perhaps what I like most about Sandstorm's stream with Colossus Minerals is precisely the sort of upside potential that guided me into a long-term share position in original metal streamer Silver Wheaton prior to that stock's truly impressive run. I refer, specifically, to the exceptional likelihood that continued exploration by Colossus will grow the scale of known mineralization at Serra Pelada, and thus deliver organic growth right to Sandstorm's doorstep. Major miner Vale (NYSE: VALE) conducted much of the initial exploration work on the property, and Colossus has continued to hit precious pay dirt with an effective exploration campaign that continues alongside mine construction.

Just recently, in fact, Colossus successfully "closed the gap" between the deposit's Central Mineralized Zone and the nearby GT Zone with enticing high-grade intercepts including a 3.3-meter interval grading 54.48 grams per ton gold, 0.69 g/t platinum, and 5.42 g/t palladium. With a hat-tip to precious metals analyst Chris Marchese, who blogs at Motley Fool CAPS under the username speedybure, I am a delighted new shareholder of Colossus Minerals. As Serra Pelada moves toward production to commence next year, I look forward to associated gains in the shares of both Colossus Minerals and Sandstorm Gold.

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