description: <p style="text-align: justify;">LOCALITY: Wolfram Camp Mine, Queensland, Australia <br /><br />1 1/2" across <br /><br />The planer faces of this specimen are not crystal faces. They result when molten bismuth cooled and had its expansion impeded by quartz crystal faces that lined the pocket. Bismuth expands as it cools whereas most solids contract as they cool.</p> <p style="text-align: justify;"> </p> <p style="text-align: justify;">Photo by Matthew Webb of Melbourne, Victoria, Australia</p>
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