I am not quite sure what this is, but it is labelled "Green oxide of Chromium" from Baltimore, and comes with a presentation label apparently from a Doctor in Baltimore who presented the sample to the Academy.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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== {{int:filedesc}} ==
{{Information
|Description=
{{en|1=Chromite
:: Locality: Baltimore, Maryland
:: Size: small cabinet, 7.4 x 7.0 x 5.3 cm
::;Chromite
:: I am not quite sure what this is, but it is labelled "Green oxide of