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Chrome-Chalcedony
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A variety of Chalcedony
A variety of chalcedony colored deep green by Cr compounds. (Compare with the more common Chrysoprase variety of chalcedony, which is colored by nickel.) Chrome chalcedony found in an ancient Roman gem collection may have come from one of the chromium deposits in what is now Turkey. Present commercial production comes from Zimbabwe under the trade name "mtorolite", and from Bolivia under the trade name "chiquitanita".
Visit gemdat.org for gemological information about Chrome-Chalcedony. Currently in public beta-test.
A variety of chalcedony colored deep green by Cr compounds. (Compare with the more common Chrysoprase variety of chalcedony, which is colored by nickel.) Chrome chalcedony found in an ancient Roman gem collection may have come from one of the chromium deposits in what is now Turkey. Present commercial production comes from Zimbabwe under the trade name "mtorolite", and from Bolivia under the trade name "chiquitanita".
Visit gemdat.org for gemological information about Chrome-Chalcedony. Currently in public beta-test.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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