Occurrence • Boron-Borates, Limestone, General, Gypsum-Anhydrite
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Producer • Iron, Nickel, Aluminum
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Producer • Sulfur-Pyrite, Lead, Zinc
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Producer • Lead, Sulfur-Pyrite, Silver, Zinc
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Plant • Phosphorus-Phosphates
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Plant • Phosphorus-Phosphates
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Producer • Gold, Lead, Zinc
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Prospect • Phosphorus-Phosphates
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Plant • Phosphorus-Phosphates
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