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The top documents tagged [metamorphic rock samples]
DEVELOPING A USEFUL SET OF PROXY ELEMENTS FOR THE TARGETING AND EXPLORATION OF GOLD DEPOSITS
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NOTES: Earth: Age--4.6 billion years by radioactive isotope dating. Atmosphere--80% Nitrogen, 20% Oxygen, trace of Carbon Dioxide. Pressure = 14.7 lbs/sq
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Versus. Rock on! Igneous Rocks …are solidified from mineral matter in a high-temperature molten state
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