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Strontianite : SrCO3, Fluorite : CaF2 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA A diamond drill core composed of white strontianite and fluorite. Collected from the Allied Chemical Company's core library that was dumped in 1986. Because that company owned the Minerva Oil Company's holdings - including the Minerva No. 1 mine - and because strontianite was abundant in that mine, this specimen is most likely from there as well. ... |
| © Alan Goldstein | Photo ID: 25168 View Count: 373 |
Strontianite : SrCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA A section of a diamond drill core composed of pink strontianite. Collected from the Allied Chemical Company's core library that was dumped in 1986. Because that company owned the Minerva Oil Company's holdings - including the Minerva No. 1 mine - and because pink strontianite was found in that mine, this specimen is most likely from there as well. ... |
| © Alan Goldstein | Photo ID: 25170 View Count: 311 |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA Balls of acicular white strontianite crystals contrast nicely with dark underlying sphalerite. 5.1 x 4.5 x 2.6 cm. Collected 1978. RFC M1499. |
| © Michael C. Roarke | Photo ID: 84201 View Count: 156 |
Strontianite : SrCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA A 4.5 x 5 x 5 cm cluster of tightly grouping colorless strontianite crystals. Crystallized pretty much all around; an excellent rich example for the species from this closed locality! Some tipping is present, typical of pretty much all Illinois strontianite specimens, but overall in great shape I think. Ex Gene Tribbey collection #1057 with ... |
| © Dan Weinrich | Photo ID: 117689 View Count: 110 |
Strontianite : SrCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA Steeply terminated crystals to about 5 cm. Harvard Mineralogical Museum no. 117133. P. Cristofono photo. |
| © 2007 Peter Cristofono | Photo ID: 134641 View Count: 98 |
Strontianite : SrCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA An aesthetic nest of off-white Strontianite crystals, some of which show a great deal of clarity in their terminations. specimen size = 5.4 x 4 x 3.1 cm. |
| © Russell G. Rizzo | Photo ID: 110992 View Count: 94 |
Strontianite : SrCO3, Calcite : CaCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA 4.0 x 3.5 x 2.3 cm. An excellent and showy ball of glassy, pastel-pink strontianite needles aesthetically perched atop a plate of calcite covered with lustrous, colorless calcite scalenohedrons. Classic material from the famous Minerva #1 Mine of Illinois. |
| © Rob Lavinsky | Photo ID: 162816 View Count: 72 |
Strontianite : SrCO3, Calcite : CaCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA A neat hemispherical spray of sparkling colorless acicular strontianite crystals measuring 3.2 x 3.1 cm in size is set perfectly on top of a crystallized matrix of calcite. Measures 4.3 x 4.3 x 3.3 cm in size overall. Upon close examination the strontianite crystals are transparent. There is minor bruising to the calcite crystal matrix. The ... |
| © Dan Weinrich | Photo ID: 117694 View Count: 66 |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA 4.9 x 2.4 x 2.1 cm. Strontianite is a rare carbonate mineral (strontium carbonate) and one of only a handful of known strontium minerals. Crystals are rarer than the massive forms. Typical specimens have spiky, minute crystals in radiating aggregates or tufts, exactly as you see here in this fine miniature from the Minerva. Ex. Consie Prince ... |
| © Rob Lavinsky | Photo ID: 208780 View Count: 42 |
Strontianite : SrCO3 | |
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Minerva No. 1 Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA 5.7 x 5.0 x 3.1 cm. A superb specimen of connected intergrown balls of strontianite and covered with glassy, colorless needles. Classic material from the Minerva #1 Mine of Illinois. Ex. Consie Prince Collection. |
| © Rob Lavinsky | Photo ID: 217428 View Count: 28 |
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