Datolite with Native Copper inclusions Petherick Mine, Copper Falls, Keweenaw Co., Michigan 4.6cm x 4.04cm x 2.11cm Ex. Jim & Jennie Hird Collection Ex. A. E. Seaman Mineral Museum No. DM-2015

Description/Interesting Notes: An old, rare example of datolite crystals richly included with native copper!!! While datolite nodules are commonly seen from this region, actual CRYSTALS of datolite are seldom encountered!!! This specimen consists of a group of intergrown datolite crystals that are SO richly included with bright native copper that they almost appear to be gilded metallic crystals!!! However, upon close inspection, one finds that all the copper is deep inside the crystals!!! The crystals exhibit a curious network of highly complex faces that appear to be a mix of contact faces with somewhat velvety luster and regular faces, with brilliant glassy luster!!! The largest crystal measures over 2.5cm!!! This specimen displays magnificently and is quite striking in person!!! This is a very significant Michigan old timer indeed!!! This specimen retains an old A.E. Seaman Museum label with Hird Collection notatino!!! In person this specimen is brilliantly lively and very eye-catching!!! The pics hardly do it justice!!! 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 NOVEMBER 4th!!!

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