Fluorite, Calcite

Unknown Owner

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This big, rich Hardin County specimen has stuff going on ALL OVER it! On one side, it has these big, dark purple crystals (to 2.9 cm) - so dark in fact that this was called the Black Spar Mine and these were sometimes known as "black fluorites" - though under good light you can see that the crystals have golden centers and purple rinds, not unusual for many of the mines in this complex. On the other side of the specimen are gemmy, deep amber crystals of calcite to 2.5 cm. The plate of fluorite apparently came loose in the pocket, allowing the calcites to grow on the "back" side. Ex. Tom Weisner Collection.