Cassiterite pseudomorph after Orthoclase St Agnes, Camborne - Redruth - St Day District, Cornwall, England 3.07cm x 2.12cm x 1.47cm Ex. John F. "Lord" Calvert Collection (1825-1897) Ex. Walter E. Kuenstler Collection (1887-1969)

Description/Interesting Notes: A classic, old time example of this highly prized pseudomorph from Cornwall!!! These old cassiterite after orthoclase pseudomorphs came from a small, one time find in Wheal Coates around 1828 and have been highly sought after by collectors ever since!!! This specimen consists of several intergrown orthoclase crystals that have all been completely replaced by cassiterite!!! The orthoclase crystals exhibit characteristic twinning and upon close examination with a loupe or scope one can see the minute, darkly colored crystals of cassiterite that this historic pseudomorph is comprised of!!! This specimen has surprising heft for its size!!! This specimen retains old labels from the Lord Calvert (1825-1897) Collection and Walter E. Kuenstler (1887-1969) Collection as well!!! Don't miss out on this rare opportunity - these specimens are extremely difficult to obtain!!! The pics hardly do it justice!!! Must be seen in person to be fully appreciated!!! Good luck and be sure to check out my other exciting mineral auctions on ebay!!! STAY TUNED!!! MORE AUCTIONS WILL BE ADDED MONDAY NIGHT FOR A SPECIAL 3-DAY AUCTION, ENDING THURSDAY FEBRUARY 23rd!!! **We have just returned from the annual Gem & Mineral Show in Tucson, Arizona!!! Be sure to stay tuned as we will be listing our exciting acquisitions throughout the next coming weeks!!!***

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