Indiana
Indiana isn’t the first US state we think of when it comes to mineral specimens.
This page collects together all the specimens we do have from Indiana.
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Indiana is best known mineralogically for specimens of calcite, dolomite, fluorite, celestine, barite, sphalerite, galena, and quartz, particularly from limestone quarries, geode-bearing formations, and historic mining areas.
Calcite is the state stone of Indiana, officially designated in 1971, reflecting the importance of limestone to the state’s geology and economy. Limestone itself has been a major industrial resource, famously used as building stone for monuments and architecture throughout the United States.
Indiana is especially well known among collectors for its geodes, many of which contain attractive crystal linings of quartz, calcite, dolomite, or fluorite, and are found primarily in the southern part of the state.
Indiana exploits a range of mineral and industrial resources including limestone, dolomite, gypsum, clay, sand and gravel, coal, oil, and natural gas. These materials have played a central role in construction, manufacturing, and regional development.
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