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Walter R. Kellogg


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Mineral Specimen #4306    Fluorite

Hardin Co., Illinois

Ex. A. Neely 1960s or older

One large cubic Fluorite crystals with several others around its base. The overall color is purple but this coloration is due to a very thin layer over the surface. The interior is a very pale yellow/beige. There are several internal cleaves which show this color. When lit form underneath, most of this color disappears and a rich purple predominates. This is the best way to exhibit the specimen. The surfaces are composed of a large number of small, stepped faces. Note: recently, because the price of Fluorite specimens from Illinois have become so high, specimens similar to this one with the internal cleaves have been treated with oil under pressure. This forces the oil into the cleavages and makes them difficult to see which dramatically increases the specimens. It has long been a practice to oil the surfaces of Fluorite specimens. This specimen is complete natural and has not been oiled. The specimen is in fairly good condition 

11.7 x 13.5 x 4.5 cm
Largest XL is 8.3 x 8.2 cm


This mineral is also found in the following galleries: Minerals From the United States | Fluorite | Minerals Priced Between 100 and 199 Dollars