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Sanidine. SC262 – Nosean on Sanidine and Orthoclase from In den Dellen quarries, Mendig,...
With scapolite here we will mean both marialite and meionite, since the two are often hard to...
Scheelite is one of the minerals with intrinsic fluorescence: the tungstate group in scheelite,...
Smithsonite, quite often fluorescent, multiple colors longwave or shortwave, but not too often...
Sorensenite, rare beryllium mineral from Greenland.SC1210 – Sorensenite from the Ilímaussaq...
Sphalerite -- fluorescent almost any color, most often under longwave UV light. Considering here...
A classical specimen from a classical locality. Very clear and transparent, lightly amber colored,...
A very aesthetic cluster of halite crystals. Clear and translucent in daylight, it shows the...
Cluster of clear celestine crystals, with a little yellow sulphur at the base. The celestine...
Fluoborite in a marble matrix with small pyrite grains and graphite flakes. The fluoborite...
Radiating needles of brown stevensite with a little calcite and quartz. The stevensite fluoresces...
Yellow, translucent meliphanite crystals on black biotite. Under midwave UV light the meliphanite...