Orange grains of norbergite up to 4mm in marble, fluorescing pale yellow in SW. The marble fluoresces a faint blue. A macro closeup is also included with FOV 20mm.
Lit by a 15w Glw Stck. Specimen is 70 x 64 x 50mm.
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Orange grains of norbergite up to 4mm in marble, fluorescing pale yellow in SW. The marble fluoresces a faint blue. A macro closeup is also included with FOV 20mm.
Lit by a 15w Glw Stck. Specimen is 70 x 64 x 50mm.