Unusual Physical Properties of Minerals

15 rocks with interesting properties for the curious collector

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Each mineral has its particular set of properties; classic ones include color, streak color, hardness and many others.

A relatively small group of minerals exhibit one or many characteristics that pertain only to this specific mineral or a small group. These unusual characteristics are the reasons for this collection, so add to your existing rock collection rocks that smell bad, magnetic rocks, salty rocks, particular shapes and more!

Minerals: halite, Island spar (calcite), magnetite (2), sulfur, vermiculite (mica), pyrolusite, cristobalite, microcline, fluorite, graphite, bauxite, quartz, hematite, barite.

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