Fluorite (fluorescent) & Quartz (old) Trimingham Coll.

Mahoning Mine, Cave-in-Rock, Hardin Co., Illinois
Large Cabinet, 20.6 x 14.8 x 8.0 cm
Start Time: 12/21/2017 6:30:00 pm (CST)
End Time: 01/04/2018 6:30:00 pm (CST)
Auction Closed

Item Description

A sculptural, impressive, museum-sized and surprising combination fluorite plate from this famous locale. The dramatically intergrown sharp cubes, to 5.5 cm, have frosted, highly lustrous, dense stepped-growth faces and look nearly opaque in ordinary light, with only hints of purple. BUT, portions light up with rich purple color, with even some color-zoning, when backlit! In excellent shape, overall, for such a large piece, with only a couple of cleaved corners on the right side and a bit of edge wear to a cube on the left side. This imposing large piece has two fine display views and the chert matrix is covered with scintillating drusy quartz. Moderate purple fluorescence. Ex Bob Trimingham Collection and acquired in 1966. Old-time material. The "Mahoning Mine" dates the piece to the 1940s to 60s, prior to the merger of the Ozark and Mahoning companies and calling the mine Minerva No. 1. Uncommon and most excellent large old-time combination material. Value?

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