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Grandite

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Crystal System:
Isometric
Name:
Created by combining the "gr" from grossular and the "and" from andradite.
Synonym:
Originally it was a species name for an intermediate compositional range between grossular and andradite; but since the adoption of the 50% rule it has come to be more of a generic name for the series - used when the exact percentages of Al and Fe aren't known, and hence the species can not be determined.

Visit gemdat.org for gemological information about Grandite.


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