Giant sand deposit in Indiana entirely melted down into glass
By Mark Lauckner; posted January 26, 2020
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Apparently the glass from this dune in Indiana produced a distinctive blue color and was entirely consumed by glass factories by 1920. https://orangebeanindiana.com/2020/01/05/hoosier-slide/?fbclid=IwAR16kn5yC4K3lKbjaaVZS506IyFYQOO_zFEA6WWAdoRPlTIkc8zJfk0Vh6w |