stackyFACTSWhile quartz gets all the fame, feldspar is doing the actual heavy lifting. This group of rock-forming minerals comprises over 50 percent of the Earth's crust by weight. It is everywhere, embedded in granite, basalt, and dirt, quietly holding the continents together while being utterly ignored by rock collectors.
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In the mineral world, talc is an absolute pushover. Defining the absolute lowest rating of a 1 on the Mohs hardness scale, it is so ridiculously soft that you…
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Ah, fool's gold. Iron sulfide, or pyrite, is geology's favorite practical joke. It features a dazzling, metallic brass-yellow luster that makes amateur…
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Diamonds are formed too deep to reach, so we have to rely on violent 'kimberlite pipes' to bring them up. These are carrot-shaped, supersonic volcanic…
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Geologists couldn't just call it 'salt,' so they named it halite. It forms massive cubic crystals entirely through the evaporation of ancient enclosed seas.…
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New Age crystal shops would have you believe quartz is an incredibly rare, mystical artifact. In reality, silicon dioxide is so absurdly common that it makes…
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Loess is a formal geological term for massive deposits of wind-blown silt and clay. Over thousands of years, relentless winds can pick up fine dust from…
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