I've had a email response from Rob Ferguson, the current Research Associate at Nova Scotia Museum Past Senior Archaeologist about my find.
Hi Beverly,
I showed the pictures to Deborah Skilleter, the geologist at the NS Museum. She described this as a concretion nodule. The hollowed portion would have been natural siderite, which is a readily oxidized material, hence the red staining. It has eroded from the cobble, leaving the grey rock, which is a slightly metamorphic sandstone that has accreted around the siderite. So despite the intriguing shape it is a natural formation.
Cheers,
Rob
Hi Beverly,
I showed the pictures to Deborah Skilleter, the geologist at the NS Museum. She described this as a concretion nodule. The hollowed portion would have been natural siderite, which is a readily oxidized material, hence the red staining. It has eroded from the cobble, leaving the grey rock, which is a slightly metamorphic sandstone that has accreted around the siderite. So despite the intriguing shape it is a natural formation.
Cheers,
Rob
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