Turmalin iz Eronga jedan je od najtraženijih uzoraka ove mineralne grupe iz južne Afrike. Kristali iz regije Erongo u Namibiji poznati su po jasno izraženim…
Opširnije Turmalin (Šorl)Tag: Schorl
Schorl is the black variety of the tourmaline group. It is rich in iron and forms in igneous and metamorphic rocks. Schorl often occurs as prismatic or striated black crystals. It is commonly found in pegmatites, granite, and schist. Major sources include Brazil, Afghanistan, the USA, and Africa. Schorl is popular among collectors and valued for its protective symbolism. This page covers its origin, traits, and major occurrences.