$548Median
10Sold (12 mo)
$1,500Last sale
Imayoshiite from Shijiangshan Mine, Hexigten Banner, Inner Mongolia, China
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Very fine for this rare species with coloress crystals across the top of a sphalerite matrix. Shinichengite is present as well. In good condition.
The Shijiangshan Mine, situated in Hexigten Banner (Keshiketeng County), Chifeng City (Ulanhad League) in Inner Mongolia, China, is renowned for its complex polymetallic skarn deposits formed via intense contact metamorphism and hydrothermal activity. Geologically, the region features carbonate and silicate rock sequences intruded by Mesozoic magmatic bodies, creating diverse skarn pockets enriched in rare elements. Within these hydrothermally altered vugs, the mine has produced exceptional mineral specimens, including imayoshiite. Imayoshiite is an ultra-rare hydrated calcium carbonate-borate mineral belonging to the ettringite group. Formed during late-stage low-temperature hydrothermal activity, it occurs as tiny, colorless hexagonal crystals and stands out scientifically for its unusual chemical structure incorporating both borate and carbonate complexes.
Product details
SpeciesImayoshiiteSphalerite
SizeLarge Cabinet
Dimensions15.5 x 10.0 x 5.5 cm
Added on09/07/2026
LocalityChina, Inner Mongolia, Shijiangshan Mine
Current owner
Unknown Owner
- Acquired
- Nov 2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
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