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Formula: Y2(CO3)3.H2O
Hydrated carbonate of yttrium
Crystal System: Triclinic
Specific gravity: 3.62 calculated
Hardness: 4
Streak: Light grey
Colour: Colourless
Environments
Sedimentary environments
Hydrothermal environments
Yuchuanite-(Y) is a new mineral, approved in 2022 and to date (March 2024) reported only from the type locality.
Localities
At the type locality, the Yushui mine, Mei county, Meizhou, Guangdong, China, yuchuanite-(Y) has been discovered
in the copper deposit. The mineral occurs in bedded/massive ore and is
associated with bornite,
chalcopyrite, galena,
sphalerite, bastnäsite-(Y),
xenotime-(Y), anhydrite and
quartz. Individual crystals range in size from 30 to 300 μm. No twinning is
observed. The yuchuanite-(Y) is colourless and transparent with a vitreous luster
(AM 109.3.599-605).
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