Boltwoodite, Asbolane & Birnessite - Jomac Mine, San Juan, Utah (ex. Patrick Haynes col.)
Boltwoodite, Asbolane & Birnessite - Jomac Mine, San Juan, Utah (ex. Patrick Haynes col.)
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$62.00 USD
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(K,Na)(UO2)(SiO3OH) · 1.5H2O
(Ni,Co)2-xMn4+(O,OH)4 · nH2O
(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
A nice specimen of the mineral combination of Boltwoodite, Absolane & Birnessite from the Jomac Mine, San Juan, Utah. This specimen is also slightly fluorescent, with 254nm shortwave pictured. This specimen comes from the collection of noted Geologist Patrick Haynes.
Approx. specimen size: 65mm x 35mm x 10mm
Approx. specimen activity on an SE International Ranger EXP: 2500 cpm