Ex. Mark Wilson Collection
Large, rich specimen of a very complex, interesting assemblage of REE and U/Th minerals from an unusual Colorado locality. Measures ~50,000 CPM on my Ludlum Model 3 Geiger Counter with the 44-9 probe. Rare!!
$150.00
In stock
Species: Thorite, Thorogummite, Zircon
Locality: Seerie pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USA
Size: 16.2 x 10.3 x 7.4 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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Species: Columbite-(Mn), Parsonsite, Zircon
Locality: Mica Lode Mine, Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA
Size: 15.5 x 12.4 x 5 - 2,316 grams
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Species: Uranopyrochlore, Zircon
Locality: McDonald Mine, Foley Township, Parry Sound District, Ontario, Canada
Size: 7.6 x 4.3 x 8.8 cm
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