- Fourth of July Mine (Fourth of July claims; Ellis shaft; Billingsley Fluorspar Mines; Sydney Mine), Duncan, Ash Peak District (Twin Peaks District), Greenlee Co., Arizona, USA
- Small Cabinet, 6.9 x 5.9 x 1.1 cm
An old-time, very showy crust of bubbly, botryoidal psilomelane from the lesser-known Fourth of July Mine, near Duncan, Arizona. Excellent material from this locale. Accompanied by a Burminco label, which dates the piece to the 1950s to 1970s.