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Description: | Cheyenne Canyon, [El Paso County], Colorado, [USA] [Proterozoic], [Precambrian] [Pike Peak Batholith] [ca. 1.08Ga] Nice specimen - sharp crystals up to 7mm on edge. Mildly radioactive (ca. 10 cps on Geiger counter). This may be from the locality also known as "Helen Hunt Falls". | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SILICTMISC : MINERAL : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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