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Amphibole    Bear Lake diggings, Maddill Road, Tory Hill, Ontario, Canada.  In the early 1990s I found and mined a large amphibole pocket that produced a handful of these long, prismatic crystals along with many of the stocky, more traditionally shaped crystals.  Then they were referred to as fluor-magnesio-kataphorate.  Now, likely classified as fluoro-kataphorite but they should be analyzed to determine the species.  This one is a lustrous, black specimen with a complex termination and interesting prism faces.  Some of these faces are highly lustrous, others show interesting and attractive dissolution etching patterns.  The open area visible at the top left in the first image is fully crystallized.  The piece is a single crystal that measures 8 x 2.7 x 1.8 cm.  There is no damage.  A great and uncommon amphibole!  $275

Amphibole

SKU: GD-0405
$275.00Price

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    Geologic Desire. Est. 1994, on-line, 1996

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