Studtite
Johannesschacht Mine, Wölsendorf, Schwarzach bei Nabburg, Schwandorf District, Upper Palatinate, Bavaria, Germany
Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control. A find from 1934 was recently reinvestigated. Bright yellow Studio fibres. EDS confirmed. Collection and photo Stephan Wolfsried.
© Stephan Wolfsried 5/2017