OCR Text |
Show Stone That Floate There Is no other Instance In nature of the fusing of quarts In the absence of a flux, except by the action of lightning light-ning striking sand or a mountain top. Science has named this product fulgurite ful-gurite glass. At the crater there are many wonderful specimens of snnd-stone snnd-stone seemingly so fused. In ome cases the quarts Is fused into lumps of opalescent material, but more frequently fre-quently the sandstone has been puffed up and distorted, owing to the steam produced by the water which was In the stone at the time the outer and very highly heated part of the advancing advanc-ing meteoric mass was In close contact con-tact with the rock. Innumerable water-tight cavities, as In pumice, were formed by the steam, so that large and small masses ot this peculiar and most Interesting sandstone will float like a cork. |