chiastolite (St-Jacques-de-Compostelle)
Details of the black cross of a chiastolite with some graphite, quartz, biotite, a small garnet at the bottom edge and some white micas. The clear yellow crystal at the bottom of the picture is andalusite.
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chiastolite (St-Jacques-de-Compostelle)
Details of the black cross of a chiastolite with some graphite, quartz, biotite, a small garnet at the bottom edge and some white micas. The clear yellow crystal at the bottom of the picture is andalusite.
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