What is Zektzerite?
Zektzerite is a rare lithium sodium zirconium silicate from alkaline granites, collected for pale translucent crystals and an unusual combination of light elements with zirconium.
Mineralogy and structure
Reference formula: LiNaZrSi6O15. Zektzerite is orthorhombic with the ideal formula LiNaZrSi6O15. The structure belongs to a distinctive zirconium silicate framework, and a clean COD model is used for the Guide illustration. Zektzerite is classified with silicates and has orthorhombic crystal symmetry. Typical hardness is 6–7 on the Mohs scale and specific gravity is approximately 2.7–2.9.
Colour, lustre and habit
Typical colours include colourless, white, pale pink, yellow. The usual prismatic, tabular, granular habit and vitreous, pearly lustre help describe a specimen, but colour alone is not diagnostic.
Formation and notable localities
Zektzerite forms in or is associated with alkaline granitic pegmatites and late cavities in rare-element intrusive rocks. Important documented localities include the Golden Horn batholith in Washington, Norway, Russia and other rare-element pegmatite districts.
A rare-element pegmatite showpiece
Zektzerite appeals to collectors who want something beyond common quartz and feldspar: its delicate colour, sharp habit and unusual zirconium-lithium chemistry make a small crystal feel genuinely exclusive.
Collecting and care
Protect pale crystals from impact and abrasion. Avoid aggressive acids and retain pegmatite provenance, since a documented Golden Horn specimen is far more valuable than an anonymous pale fragment.
