(Photo) Leucite as grey-white material in groundmass (“leucitite”). Elsewhere on specimen: Green prismatic diopside. Brown-black prismatic clinopyroxene. Nepheline as hexagonal prisms. Nepheline with hollow cores have been altered to analcime. Colourless needles of fluorapatite. Grey...
Greenish-grey zircons with black inclusions and tiny colourless crystals (sanidine?) sprinkled on terminations, and as most of the matrix. The sanidine fluoresces pink under shortwave UV. Associated with black “biotite” and orange fluorescing sodalite under...
A sharp ilmenite crystal in a cavity lined with sanidine crystals. Width of view 4.5mm. Stack of 14 images. Click on the image below for a higher resolution version.
Pink grains of eudialyte or manganoeudialyte with/in andradite, and phenocrysts of sanidine in a green groundmass. Other species likely present but would need analysis to confirm. Width of view 11.5mm. Stack of 75. Click on...
Collected by Mike Reinke. Width of view 6.5mm. Stack of 80 images. Click on the image below for a higher resolution version.
Tiny blue jeremejevite with white sodalite, colourless prismatic topaz and colourless/grey sanidine. Hematite also on specimen. Width of view 5.75mm. Stack of 30 images. Click on the image below for a higher resolution version.
Mounted on cork by the the late famous all-time master of micromounting, Neal Yedlin in a vintage cardboard box bearing his personal label on which he hand wrote the ID. Jack Slagle photos.
5613 Cristobalite and sanidine in obsidian, Roadcut Section, Poihipi Road, Taupo District, Waikato Region, North Island, New Zealand. Photo width 5mm. Stack of 80 shots.
