$1,950Median
2Sold (12 mo)
$900Last sale
Sanidine specimens for sale
1 for sale · $160 USD
24 in the gallery
Sanidine is a high-temperature alkali feldspar mineral with the chemical formula KAlSi3O8. It occurs in monoclinic crystal habit and typically forms prismatic, tabular crystals, often with a glassy to pearly luster and a pale to amber color. As a member of the feldspar group, sanidine frequently coexists with other feldspars and silicate minerals in granitic pegmatites, rhyolites, and volcanic deposits. Fine specimens show clear or lightly tinted crystals that can be relatively large, and they may display zoning or twinning typical of feldspars. The mineral is most commonly associated with high-temperature environments where rapid crystallization occurs, providing collectors with distinctive, well-formed crystals from classic localities.
- Formula
- K(AlSi3O8)
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About Sanidine
Notable specimens come from Madagascar, the USA, France, and Italy, where sanidine-bearing rocks yield clean crystals and striking crystal faces. Collectors value sanidine for its clarity, lustrous surfaces, and the vibrancy of color in certain samples, as well as its rarity in pristine, large crystals from ideal geologic settings. Although often overlooked in broader mineral catalogs, sanidine offers a straightforward aesthetic appeal and reliable crystallography for those assembling feldspar groups or pegmatite suites.
