Englishite, Tiptopite
Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control. White flaky Englishite with colourless transparent Tiptopite needles. Collection and photo Stephan Wolfsried
© Stephan Wolfsried 3/2017