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Aurichalcite spherulites on limonite matrix
ID: 4592
Locality: Upper Mine (oxidation zone), Dalnegorsk, Primorsky Territory, Russia
Specimen size: 58 × 41 × 34 mm
Weight: 50.18 g
Numerous spherulites of aurichalcite in bright blue to bluish-green hues are scattered across a porous limonite matrix. The mineral forms small, dense, rounded aggregates that coat the uneven surfaces and cavities of the host rock, creating a striking contrast with the brownish matrix. The specimen is notable for its excellent preservation and strong aesthetic appeal.
The Upper Mine in Dalnegorsk, one of the oldest mining sites in the region, has been known since the late 19th century. Today, the deposit is completely exhausted, and fine specimens from its oxidation zone — such as this one — have become increasingly rare and highly sought after by collectors.