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MD-154901 - Benstonite, Calcite, Fluorite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA large cabinet, 15.4 x 12.2 x 11.9 cm.
15.4 x 12.2 x 11.9 cm. This is an OLD, unusual, very large specimen from Hardin County that is very uncommon to see on the market. What you have is these large, very spiky calcite scalenohedra (some of them do have tip cleaves), with a coating of whitish benstonite. The calcites have grown on a layer of teal-colored fluorite. Two layers of this fluorite sandwich a layer of brownish-yellow calcite. An old-timer! Ex. collection of Gary Hansen, noted Mid-west dealer until 1980s.
MD-181549 - Benstonite, Fluorite, Sphalerite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA small cabinet, 6.3 x 4 x 3.5 cm.
6.3 x 4 x 3.5 cm. This is a very rare and complex carbonate species that was found only sporadically, in small pockets, in the older days of this mine. This is a niece specimen showing the paragenesis of the mineral, on altering fluorite matrix. Ex. Martin Zinn Collection.
MD-37919 - Benstonite, Calcite, Fluorite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA small cabinet, 6.4 x 5.3 x 4.3 cm
A very attractive, balanced, display-quality specimen that features two pagoda-like towers of benstonite sticking up from the matrix of benstonite-covered calcite and fluorite. NICE! 6.4 x 5.3 x 4.3 cm
MD-37920 - Benstonite, Calcite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA miniature, 4.8 x 3.8 x 3. cm
These sharp pagoda-like towers of benstonite come to a finer point than you commonly see for the occurrence, and thus the piece is very dramatic. Small peripheral damage, but none to the 2 largest spikes. Superb miniature, very showy! 4.8 x 3.8 x 3. cm
MD-37921 - Benstonite, Sphalerite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA small cabinet, 7.8 x 4.9 x 4 cm
Benstonite was one of the more rare species found in the Illinois fluorspar district. Specimens were exceptionally uncommon, and tended to go back aways, even before the mines closed in the late 1990s. This piece features a doubly-terminated benstonite cluster of 5 cm (just over two inches) perched smartly and well exposed on contrasting sphalerite matrix. A very aesthetic specimen, which is rare indeed for this material! It displays superbly and should be considered a competition level specimen. 7.8 x 4.9 x 4 cm
MD-37922 - Benstonite, Sphalerite, Fluorite - - Archived Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA small cabinet, 7.5 x 6.5 x 6 cm
A large and showy specimen covered all around with pagoda-like towers of benstonite! This piece is amazingly, nearly pristine. It is one of the largest benstonite specimens I have ever seen for sale, and is certainly the richest in terms of coverage. The pedigree is an added bonus. 7.5 x 6.5 x 6 cm
MRZ273 - Benstonite with Fluorite and Sphalerite - SOLD Minerva #1 Mine, Cave in Rock, Hardin Co., Illinois, USA small cabinet, 6.3 x 4 x 3.5 cm ex. Martin Zinn
Named after Orlando J. Benston, an ore dressing metallurgist with the University of Illinois, this is a very rare and COMPLEX carbonate species that was found only sporadically, i nsmall pockets, in the odler days of this mine. This is a niec specimen showing the paragenesis of the mineral, on altering fluorite matrix. All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries | ||||||||||||||
