“Needles of rutile oriented in 'biotite'. The three systems cross in 60°. You may have to zoom in a bit to spot the details. An article on this locality and 'sagentic structures' in mica is in preparation. Setup: Sony Alpha 6000, bellows, Raynox 250 retro, Optem M Plan Apo 10x; Helicon Focus. ”

“'Biotite' is scatterd thruout the diorite-porphyrite. The crystals form six-sided 'packages'. Setup: Sony Alpha 6000, bellows, Raynox 250 retro, Nikon E-Plan 4x; Helicon Focus. ”

“Close-up of the 'sagenetic structures'. Setup: Sony Alpha 6000, bellows, Raynox 250 retro, Seiwa Apo Plan 20x; Helicon Focus. ”