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Other associations Metamorphic topaz from Brewer mine, South Carolina, is cryptocrystalline. Large pinkish crystals occur in a pegmatitic granite xenolith in rhyolite from Honeycomb Hills, Utah, and 100-pm crystals are common in a topazquartz alteration adjacent to a qvartz-pyrite vein from the Henderson porphyry molybdenite deposit, Colorado.

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16y ago

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