Item Number: DI23

Hindostan whetstone is a thinly layered siltstone that was quarried in southern Indiana throughout the 19th and 20th centuries for use as sharpening stones and grave markers. Produced exclusively from northwestern Orange County, Indiana, this abundant material supplied the state’s first mineral industry and was exported throughout the United States, Europe, and Asia.

Sturgeon, P. R., Powell, R. L., Hill, B. T., Meyer, R. A., and Johnson, M. R., 2020, Indiana's Hindostan whetstone industry: Indiana Geological and Water Survey Digital Information 23,

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Keywords: siltstone, Hindostan, Whetstone, Orange County, industrial mineral, industrial history

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