A rare mineral containing calcium, yttrium, boron, and silicon, typically found in metamorphic rocks.
Named after J. Helland, a Norwegian geologist, with the mineral suffix -ite. Discovered in the 19th century and classified by mineralogists studying Scandinavian rock formations.
Hellandite is so rare that most geologists will never see it in person—it's one of those minerals that collectors hunt for like geological treasure, found mostly in Norway and Japan.
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