ZIRCON (MINERAL DEPOSITS)
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BTPRECIOUS STONES + SEMI-PRECIOUS STONES (MINERAL DEPOSITS)
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UDC553.86
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Descriptor GERZIRKON (LAGERSTÄTTEN)
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Descriptor ENGZIRCON (MINERAL DEPOSITS)
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Descriptor FREZIRCON (GISEMENTS)
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Variant FREGISEMENTS/ZIRCON