Boltwoodite, Asbolane & Birnessite - Jomac Mine, San Juan, Utah (ex. Patrick Haynes col.)

(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