Excellent specimen of well-formed brownish crystals of Zircon var. Cyrtolite from the Butterfield pegmatites, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA. Measures ~75,000 CPM on my Ludlum Model 3 Counter with the 44-9 probe due to high Thorium content. Rare!
$220.00
In stock
Species: Monazite, Thorogummite, Zircon
Locality: Seerie pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
Size: 12.9 x 8.3 x 4.3 cm, 484 grams
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Species: Gummite, Uraninite, Zircon
Locality: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA
Size: 6.1 x 1.8 x 3.5 cm, ~100 grams
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Species: Columbite-(Fe), Zircon
Locality: Kinkel Quarry, Bedford, Westchester County, New York, USA
Size: 3.9 x 3.2 x 2.3 cm
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Species: Thorite, Zircon
Locality: South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
Size: 5.9 x 4.9 x 2.5 cm, 126 grams
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