Calcite
description: <p style="text-align: justify;">LOCALITY: Dal'negorsk, Primorjski Kraj, Eastern Siberia, Russia <br /><br />6" tall <br /><br />This piece was bought in an era when fine pieces from Dal'negorsk were not common but much more readily available then they are at modern large international mineral show. Fine Dal'negorsk pieces can now only be had from collections that are at least 10 years old. <br /><br />The "heart twin" displays the luster of polished glass, is so gemmy that the crystals are double refractive and the edges and vertices on the "front" of the piece are in pristine condition. Some contacting is present on the reverse side of the specimen. It is nice how the "heart twin" stands atop of a "stalk" of lustrous white calcite. <br /><br />Dal'negorsk is a remote locality is far eastern Siberia - closer to the United States than it is to Moscow. Specimens found during hard rock mining occupied large permafrost filled cavities. These were removed whole, hauled to the surface and allowed to gradually thaw until the crystals of calcite, fluorite and other minerals were no longer encased with ice. It is partly for this reason that so many soft and easily cleaved specimens of calcite and fluorite from Dal'negorsk were preserved.</p> <p style="text-align: justify;"> </p> <p style="text-align: justify;">This piece was bought from Daniel Trincillo at the Tucson Show in 2000.</p> <p style="text-align: justify;"> </p> <p style="text-align: justify;">Photo by Matthew Webb of Melbourne, Victoria, Australia  </p> <p style="text-align: justify;"> </p>
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