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0 item @ $0.00  

Decrespignyite-(Y)

#36350

Decrespignyite-(Y)

#36350
Availability
Available
Price
$125.00
Size
6 x 5 x 1.5 cm - Sm Cabinet 
Formula
Y4Cu(CO3)4Cl(OH)5·2H2O (RRUFF)
Locality
Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia
Tagged
carbonate , copper , REE mineral

Bright sky blue globular crystal aggregtes to 0.75mm and as large patches or crusts 3 x4mm in area. Decrespignyite-(Y) is a yttrium - copper bearing REM and a carbonate. It is according to Mindat composed of individual tiny pseudohexagonal, often curved platelets. It is found at only one locality worldwide.

As noted by the mineral name, Decrespignyite-(Y), contains the rare-earth element yttrium. Major applications of yttrium are extensive and include fluorescent lamps, phosphor compounds in computer monitirs, lasers, lighting applications, abrasives, bearings, and high-temperature alloys amongst others. Recent cost for yttrium oxide in 2019 was $14/lb down from $65/1b in 2011. The main source for yttrium is China, but worldwide reserves are found in Australia, Brazil, and India.

Decrespignyite-(Y)

Formula
Y4Cu(CO3)4Cl(OH)5·2H2
Crystal System
Monoclinic 
Crystal Habit
Efflorescences, Globular 
Cleavage
None, None, None 
Luster
Vitreous - Pearly 
Color
intense royal blue, turquoise blue 
Streak
pale blue 
Class
Monoclinic 
Hardness

Data courtesy of Webmineral.

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