Suspected stone fulgurite in arkosic limestone, ancient seabed deposit that makes up much of the surface layer of rock in the Sandia Mountains. Apparently blasted hole, black, glassy consistency. A reasonably strong magnetic anomaly was found in association with the feature, negative directly over the point of impact rising to positive around it. I’m about 95% certain of my assessment here, this local variety of limestone exhibits little, if any magnetism at the lowest altitudes but at…